A264256 Number of (n+1)X(7+1) arrays of permutations of 0..n*8+7 with each element having directed index change 0,1 0,-1 0,2 1,0 or -1,0.

2281, 181644, 32417000, 3975678008, 588617879781, 78959520889200, 11166848274154145, 1534547377654966752, 214185316674167629557, 29640776473731026096764, 4120920689916250941333009

Offset

1,1

Comments

Column 7 of A264257.

Links

R. H. Hardin, Table of n, a(n) for n = 1..61

Example

Some solutions for n=2
..1..2..3..4..5..6..7.15....8..2..1.11..5.13.14.15....8..0..3..1..2.13..7..6
..0.17.18..9.10.11.12.14....0.10.18..3..4.12..6..7....9.10.11.12..4..5.15.14
..8.16.19.20.21.13.23.22...17..9.16.20.21.19.23.22...17.18.16.20.21.19.23.22

Crossrefs

Cf. A264257.

Sequence in context: A166222 A203725 A247401 * A236700 A268892 A206663

Adjacent sequences: A264253 A264254 A264255 * A264257 A264258 A264259

Keyword

nonn

Author

R. H. Hardin, Nov 09 2015

Status

approved