%I
%S 0,2,4,11,21,34,53,82,118,171,241,332,444,582,741,931,1152,1411,1712,
%T 2064,2465,2930,3451,4034,4683,5406,6200,7085,8058,9128,10301,11588,
%U 12980,14498,16132,17885,19758,21760,23885,26159,28579,31157,33901,36826,39923
%N Number of 4element subsets of [n] having a prime element sum.
%H Alois P. Heinz, <a href="/A320679/b320679.txt">Table of n, a(n) for n = 4..500</a>
%Y Column k=4 of A282516.
%K nonn
%O 4,2
%A _Alois P. Heinz_, Oct 19 2018
