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A320678
Number of 3-element subsets of [n] having a prime element sum.
2
0, 1, 2, 6, 10, 18, 26, 37, 47, 62, 76, 96, 116, 143, 170, 205, 241, 285, 329, 382, 434, 495, 555, 627, 698, 781, 865, 962, 1059, 1168, 1276, 1397, 1517, 1652, 1786, 1936, 2086, 2253, 2419, 2600, 2779, 2974, 3168, 3378, 3588, 3818, 4048, 4296, 4543, 4809, 5073
OFFSET
3,3
LINKS
CROSSREFS
Column k=3 of A282516.
Sequence in context: A281664 A330507 A290220 * A050844 A328960 A282428
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Oct 19 2018
STATUS
approved