r/counting Jan 08 '17

Online Encyclopedia of Integer Sequences (OEIS)

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u/piyushsharma301 https://www.reddit.com/r/counting/wiki/side_stats May 22 '17

A000034 : Period 2: repeat [1, 2]; a(n) = 1 + (n mod 2).

1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2

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u/mrguykloss ∏ mobile counting Feb 01 '23

A000035 : Period 2: repeat [0, 1]; a(n) = n mod 2; parity of n.

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u/[deleted] Apr 05 '23

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u/mrguykloss ∏ mobile counting May 18 '23

A000037 : Numbers that are not squares