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Number of 6-element subsets of [n] having a prime element sum.
2

%I #4 Oct 19 2018 10:27:29

%S 0,1,7,20,51,117,239,430,724,1163,1834,2823,4252,6226,8870,12299,

%T 16712,22340,29524,38606,49979,63965,80946,101250,125316,153592,

%U 186694,225268,270172,322285,382716,452614,533380,626424,733387,855881,995740,1154735,1334850

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

%H Alois P. Heinz, <a href="/A320681/b320681.txt">Table of n, a(n) for n = 6..500</a>

%Y Column k=6 of A282516.

%K nonn

%O 6,3

%A _Alois P. Heinz_, Oct 19 2018