A320681 Number of 6-element subsets of [n] having a prime element sum.

0, 1, 7, 20, 51, 117, 239, 430, 724, 1163, 1834, 2823, 4252, 6226, 8870, 12299, 16712, 22340, 29524, 38606, 49979, 63965, 80946, 101250, 125316, 153592, 186694, 225268, 270172, 322285, 382716, 452614, 533380, 626424, 733387, 855881, 995740, 1154735, 1334850

Offset

6,3

Links

Alois P. Heinz, Table of n, a(n) for n = 6..500

Crossrefs

Column k=6 of A282516.

Sequence in context: A007044 A047862 A264879 * A048755 A055267 A218843

Adjacent sequences: A320678 A320679 A320680 * A320682 A320683 A320684

Keyword

nonn

Author

Alois P. Heinz, Oct 19 2018

Status

approved