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A318592
Number of n-member subsets of [4*n] whose elements sum to a multiple of four.
2
1, 1, 6, 55, 460, 3876, 33594, 296010, 2630044, 23535820, 211911256, 1917334783, 17417167156, 158753389900, 1451182694940, 13298522298180, 122131736900380, 1123787895356412, 10358022417860040, 95615237915961100, 883829035764950960, 8179808679272664720
OFFSET
0,3
LINKS
EXAMPLE
a(2) = 6: {1,3}, {1,7}, {2,6}, {3,5}, {4,8}, {5,7}.
CROSSREFS
Column k=4 of A318557.
Sequence in context: A295094 A295548 A198855 * A342388 A253475 A215853
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Aug 29 2018
STATUS
approved