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A272433 Number of ordered set partitions of {1,2,...,n} such that no part has the same size as any of its five immediate predecessors. 2
1, 1, 1, 7, 9, 31, 403, 757, 2873, 12607, 333051, 761377, 3699435, 16383121, 108710085, 4855474267, 13594184793, 76375572751, 388660153867, 2504206435681, 20148774553859, 1556349601444477, 10470804739432665, 113472934257201031, 1621680033815396315 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

LINKS

Alois P. Heinz, Table of n, a(n) for n = 0..60

CROSSREFS

Column k=5 of A261959.

Sequence in context: A131623 A032011 A272434 * A272432 A272431 A261961

Adjacent sequences:  A272430 A272431 A272432 * A272434 A272435 A272436

KEYWORD

nonn

AUTHOR

Alois P. Heinz, Apr 29 2016

STATUS

approved

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Last modified March 30 10:09 EDT 2020. Contains 333125 sequences. (Running on oeis4.)