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A320681 Number of 6-element subsets of [n] having a prime element sum. 2
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 (list; graph; refs; listen; history; text; internal format)
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

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Last modified April 25 13:31 EDT 2019. Contains 322461 sequences. (Running on oeis4.)