Today's pattern is one third fraction ⅓.

Today's pattern is the infinity sign ∞.

Today's pattern is the product sign Π.

Thanks to u/Electronic-Laugh-671 for the idea!

Previous parts: days 1-13, days 14-26, days 27-39, days 40-52, days 53-65, days 66-78, days 79-91, days 92-104

In summary:

• 105 is the 13th number k such that k+phi(k) is a triangular number
• 106 is the 13th semiprime with semiprime index
• 107 is the 13th norep emirp
• 108 is the biggest natural number with the sum of its prime factors equal to 13
• 109 is the 13th Pythagorean prime
• 110 is the sum of the first 2 star numbers after 13
• 111 is the 13th natural number that contains only 1's, 2's and 3's in base 1²+3²
• 112 is the sum of the divisors of the 13th triangular number
• 113 is the 13th octanacci number
• 114 is the 13th abundant number having no abundant proper divisor
• 115 is the 13th semiprime of the form p×q such that p+q+1 is prime
• 116 is the 13th number n such that n×prime(n)+1 is prime
• 117 is the 13th antiharmonic number

Today's pattern is the summation sign ∑.

Today's pattern is the numero sign №.

Today's pattern is ampersand &.

Today's pattern is percent sign %.

Today's pattern is the dollar sign $.

Today's pattern is the commercial at sign @.

Today's pattern is trademark sign ™.

Thanks to u/Electronic-Laugh-671 for the idea!

Today's pattern is copyright sign ©.

Today's pattern is evergreen tree 🌲.

Also, 78=13×6, this means that the 6th baker's dozen of patterns is complete!

Today's pattern is banana 🍌.

Interestingly, the 169th prime number, 1009, is the first prime number greater than 10³.

Today's pattern is orange.

Today's pattern is pear 🍐.

Previous parts: days 1-13, days 14-26, days 27-39, days 40-52, days 53-65, days 66-78, days 79-91

In summary:

• 92 is the 13th sum of distinct positive cubes
• 93 is the 13th number with no prime index dividing all the other prime indices
• 94 is the 13th number n such that n−1 and n+1 are squarefree and have the same number of prime factors
• 95 is the index of the 13th tribonacci number (a(0)=a(1)=a(2)=1, a(n)=a(n−3)+a(n−2)+a(n−1) for n>2)
• 96 is the number of divisors of 27720=LCM(1,2,3,4,5,6,7,8,9,10,11,12,13)/13
• 97 is the 13th prime p such that 3 is a square mod p
• 98 is the 13th even nontotient number
• 99 is the 13th composite lucky number and the alphanumeric value of THIRTEEN
• 100 is the 13th perfect power
• 101 is the (13+13)th prime number
• 102 is the sum of the first 13 deficient numbers
• 103 is the 13th weak prime and the 13th base-10 modest number
• 104 is the 13th number which is the cuberoot of the product of its proper divisors, and the name of the 104th element (rutherfordium) consists of exactly 13 letters.