A318592 Number of n-member subsets of [4*n] whose elements sum to a multiple of four.

1, 1, 6, 55, 460, 3876, 33594, 296010, 2630044, 23535820, 211911256, 1917334783, 17417167156, 158753389900, 1451182694940, 13298522298180, 122131736900380, 1123787895356412, 10358022417860040, 95615237915961100, 883829035764950960, 8179808679272664720

Offset: 0

Author

Alois P. Heinz, Aug 29 2018

Keywords

• nonn

Examples

			a(2) = 6: {1,3}, {1,7}, {2,6}, {3,5}, {4,8}, {5,7}.
		

Links

• Alois P. Heinz, Table of n, a(n) for n = 0..1000

Crossrefs

Column k=4 of A318557.