A181751 The number of paths of a chess rook in a 6D hypercube, from (0..0) to (n..n), where the rook may move in steps that are multiples of (1,0..0), (0,1,0..0), ..., (0..0,1).

1, 720, 19445040, 906140159280, 54259623434853360, 3751591832963936408880, 284751719071722748492598160, 23074162542675887567516737575120, 1962510523766609850302634846653001840, 173256558851090756974435967247639154062480

Offset

0,2

Links

Table of n, a(n) for n=0..9.

Example

a(1) = 720 because there are 720 rook paths from (0..0) to (1..1).

Crossrefs

Row d=6 of A181731.

Sequence in context: A143476 A008979 A158044 * A151596 A068300 A003792

Adjacent sequences: A181748 A181749 A181750 * A181752 A181753 A181754

Keyword

nonn

Author

Manuel Kauers, Nov 16 2010

Status

approved