A320680 Number of 5-element subsets of [n] having a prime element sum.

0, 2, 7, 13, 31, 59, 110, 191, 322, 497, 743, 1053, 1469, 1998, 2698, 3574, 4696, 6051, 7710, 9663, 11998, 14718, 17957, 21715, 26130, 31196, 37041, 43632, 51121, 59468, 68839, 79212, 90775, 103504, 117648, 133203, 150449, 169407, 190387, 213403, 238807

Offset

5,2

Links

Alois P. Heinz, Table of n, a(n) for n = 5..500

Crossrefs

Column k=5 of A282516.

Sequence in context: A294839 A373306 A231478 * A372888 A079119 A309368

Adjacent sequences: A320677 A320678 A320679 * A320681 A320682 A320683

Keyword

nonn

Author

Alois P. Heinz, Oct 19 2018

Status

approved