A264582 Number of (n+1)X(7+1) arrays of permutations of 0..n*8+7 with each element having directed index change 1,0 0,-1 1,2 or -1,1.

3, 128, 1380, 21312, 366292, 5469993, 80571013, 1220343344, 18239876421, 271161613570, 4046068917960, 60303232944737, 897820508262500, 13372087801137136, 199159806756991021, 2965719566675949428

Offset

1,1

Comments

Column 7 of A264583.

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions for n=4
..1..2..9..4..5..6..7.14....1..2..3..4..5..6.13.14....1..8..9..4.11..6..7.14
..0.16.11.12.19..3.21.22....0.16.11.18.19.20.21..7....0.10..2..3.13..5.21.22
..8.24.10.20.27.13.29.15....8..9.10.26.12.28.23.15...17.24.25.20.12.28.23.15
.25.32.18.17.35.30.37.23...25.32.33.17.29.30.22.38...16.32.27.19.18.30.37.38
.33.34.26.36.28.38.39.31...24.34.35.36.37.27.39.31...33.34.35.36.26.29.39.31

Crossrefs

Cf. A264583.

Sequence in context: A163850 A258671 A243213 * A108713 A319222 A300543

Adjacent sequences: A264579 A264580 A264581 * A264583 A264584 A264585

Keyword

nonn

Author

R. H. Hardin, Nov 18 2015

Status

approved