A274861 Number of set partitions of [n] such that the difference between each element and its index (in the partition) is a multiple of four.

1, 1, 2, 4, 8, 16, 32, 64, 128, 264, 544, 1120, 2304, 4940, 10632, 22908, 49324, 112352, 258184, 596430, 1379150, 3431265, 8639020, 21965049, 56062850, 155582125, 436328469, 1238168841, 3534962983, 10951026755, 34135076965, 107562008116, 341226376721

Offset: 0

Author

Alois P. Heinz, Jul 09 2016

Keywords

• nonn

Crossrefs

Column k=4 of A274859.