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A320684
Number of 9-element subsets of [n] having a prime element sum.
2
0, 2, 12, 47, 169, 477, 1169, 2504, 5083, 10060, 19531, 36004, 62654, 103326, 164132, 253914, 386429, 580424, 862419, 1266725, 1839456, 2638409, 3737879, 5226949, 7215039, 9830238, 13228817, 17596011, 23161194, 30200288, 39055376, 50136943, 63946416, 81075682
OFFSET
9,2
LINKS
CROSSREFS
Column k=9 of A282516.
Sequence in context: A129018 A302447 A319763 * A069946 A176684 A216152
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Oct 19 2018
STATUS
approved