A247056 Number of endofunctions on [n] that are the 9th power of an endofunction.

1, 1, 4, 19, 116, 925, 9286, 110131, 1487144, 22607353, 384379370

Offset

0,3

Links

Table of n, a(n) for n=0..10.

Example

a(3) = 19: (1,1,1), (1,1,3), (1,2,1), (1,2,2), (1,2,3), (1,3,2), (1,3,3), (2,1,1), (2,1,2), (2,1,3), (2,2,2), (2,2,3), (2,3,2), (3,1,1), (3,2,1), (3,2,3), (3,3,1), (3,3,2), (3,3,3).

Crossrefs

Column k=9 of A247026.

Sequence in context: A281817 A060907 A245505 * A163859 A197660 A354458

Adjacent sequences: A247053 A247054 A247055 * A247057 A247058 A247059

Keyword

nonn,more

Author

Alois P. Heinz, Sep 10 2014

Extensions

a(8)-a(10) from Bert Dobbelaere, Jan 25 2019

Status

approved