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

9,2

LINKS

Alois P. Heinz, Table of n, a(n) for n = 9..500

CROSSREFS

Column k=9 of A282516.

Sequence in context: A129018 A302447 A319763 * A069946 A176684 A216152

Adjacent sequences:  A320681 A320682 A320683 * A320685 A320686 A320687

KEYWORD

nonn

AUTHOR

Alois P. Heinz, Oct 19 2018

STATUS

approved

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Last modified April 26 09:52 EDT 2019. Contains 322472 sequences. (Running on oeis4.)