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A274864
Number of set partitions of [n] such that the difference between each element and its index (in the partition) is a multiple of seven.
1
1, 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192, 16448, 33024, 66304, 133120, 267264, 536576, 1077248, 2175168, 4395968, 8888800, 17978016, 36364960, 73558304, 148788576, 303793408, 621878080, 1275478720, 2619224480, 5382273968, 11063449024
OFFSET
0,3
CROSSREFS
Column k=7 of A274859.
Sequence in context: A050732 A371863 A260814 * A274863 A138815 A275077
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Jul 09 2016
STATUS
approved