A294024 Number of set partitions of [2n] such that the maximal absolute difference between consecutive elements within a block equals n.

1, 1, 5, 61, 1061, 25430, 791355, 30785899, 1455625827, 81849519019, 5379462393332, 407467385577745, 35154933887354837, 3420720341248634735, 372223103372998367607, 44962783637401793609530, 5990684079499573284887127, 875408497263831218021563807

Offset

0,3

Links

Table of n, a(n) for n=0..17.

Formula

a(n) = A287213(2n,n).

Example

a(2) = 5: 124|3, 134|2, 13|24, 13|2|4, 1|24|3.

Crossrefs

Cf. A287213.

Sequence in context: A162167 A134282 A146760 * A083082 A213110 A298695

Adjacent sequences: A294021 A294022 A294023 * A294025 A294026 A294027

Keyword

nonn

Author

Alois P. Heinz, Oct 21 2017

Status

approved