A294055 - OEIS

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A294055

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

52, 495, 3573, 22986, 138140, 791355, 4378359, 23619010, 124985133, 651528571, 3356054226, 17122003113, 86672668175, 435922323548, 2180749707230, 10860449611842, 53881317215173, 266455227999826, 1314042578677412, 6464913802646613, 31741357154688581, 155566738708385012

(list; graph; refs; listen; history; text; internal format)

OFFSET

7,1

LINKS

Alois P. Heinz, Table of n, a(n) for n = 7..1000

FORMULA

a(n) = A287278(n) - A287277(n).

CROSSREFS

Column k=6 of A287213.

Cf. A287277, A287278.

Sequence in context: A005946 A200549 A000527 * A285753 A100413 A221272

Adjacent sequences: A294052 A294053 A294054 * A294056 A294057 A294058

KEYWORD

nonn,easy

AUTHOR

Alois P. Heinz, Oct 22 2017

STATUS

approved