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 A357602 a(n) is the number of n-gons in A000940 that are asymmetric. 0
 0, 0, 0, 1, 15, 121, 1026, 8696, 81515, 827282, 9200052 (list; graph; refs; listen; history; text; internal format)
 OFFSET 3,5 LINKS Table of n, a(n) for n=3..13. FORMULA a(n) = A000940(n) - A342533(n). a(p) = ((((p-1)! + 1)/p) + p - 2 - (2^((p-1)/2)*((p-1)/2)!))/4 for prime p. See A007619. EXAMPLE Of the A000940(6) = 12 hexagons, 11 have symmetry and 1 is asymmetric, so a(6)=1. CROSSREFS Cf. A000940, A342533. Sequence in context: A081079 A138424 A279267 * A120794 A264377 A038743 Adjacent sequences: A357599 A357600 A357601 * A357603 A357604 A357605 KEYWORD nonn,more AUTHOR Ian Mooney, Oct 05 2022 STATUS approved

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Last modified December 10 09:31 EST 2023. Contains 367710 sequences. (Running on oeis4.)