A271754 - OEIS

A271754

Number of set partitions of [n+3] such that n is the largest element of the last block.

0, 1, 10, 63, 365, 2110, 12521, 77133, 495408, 3321545, 23241681, 169563944, 1288195931, 10176462413, 83473288546, 709925146315, 6251616698625, 56926598141054, 535352734428349, 5193455071192121, 51913950093082800, 534160387907563869, 5651905462025615573

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

OFFSET

1,3

LINKS

Alois P. Heinz, Table of n, a(n) for n = 1..574

Wikipedia, Partition of a set

FORMULA

a(n) = A271466(n+3,n).

EXAMPLE

a(3) = 10: 12456|3, 1456|23, 1456|2|3, 145|26|3, 146|25|3, 14|256|3, 156|24|3, 15|246|3, 16|245|3, 1|2456|3.

CROSSREFS

A diagonal of A271466.