A320679 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

A320679

Number of 4-element subsets of [n] having a prime element sum.

2

0, 2, 4, 11, 21, 34, 53, 82, 118, 171, 241, 332, 444, 582, 741, 931, 1152, 1411, 1712, 2064, 2465, 2930, 3451, 4034, 4683, 5406, 6200, 7085, 8058, 9128, 10301, 11588, 12980, 14498, 16132, 17885, 19758, 21760, 23885, 26159, 28579, 31157, 33901, 36826, 39923

(list; graph; refs; listen; history; text; internal format)

OFFSET

4,2

LINKS

Alois P. Heinz, Table of n, a(n) for n = 4..500

CROSSREFS

Column k=4 of A282516.

Sequence in context: A349566 A026275 A152597 * A126972 A295947 A018774

Adjacent sequences: A320676 A320677 A320678 * A320680 A320681 A320682

KEYWORD

nonn

AUTHOR

Alois P. Heinz, Oct 19 2018

STATUS

approved