A294057 Number of set partitions of [n] such that the maximal absolute difference between consecutive elements within a block equals eight.

877, 9831, 84026, 645307, 4673602, 32556486, 220262805, 1455625827, 9440565264, 60325621897, 380858965018, 2380570287207, 14755381094276, 90809920042072, 555505015465351, 3380585458615769, 20481290849184365, 123607231008549590, 743480537600356891, 4458809280258460139

Offset

9,1

Links

Alois P. Heinz, Table of n, a(n) for n = 9..1000

Formula

a(n) = A287280(n) - A287279(n).

Crossrefs

Column k=8 of A287213.

Cf. A287279, A287280.

Sequence in context: A320558 A270771 A154090 * A255947 A048791 A273657

Adjacent sequences: A294054 A294055 A294056 * A294058 A294059 A294060

Keyword

nonn,easy

Author

Alois P. Heinz, Oct 22 2017

Status

approved