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A264335 Number of (n+1)X(7+1) arrays of permutations of 0..n*8+7 with each element having directed index change -1,1 1,0 1,-1 or 0,-1. 1
4, 64, 1573, 51904, 1371555, 40119900, 1082465413, 28865247648, 765329377660, 20139599598080, 528526363260915, 13854017612924940, 362859602388291635, 9499873105298368189, 248666260777963610898, 6508400337721660839232 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A264336.

LINKS

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

EXAMPLE

Some solutions for n=4

..1..8..3..4.11..6.13.14....1..8..3.10..5.12.13.14....1..8..3..4.11..6.13.14

..0..2.17.18.19..5.15..7....0.16..2..4.19..6.21..7....0.16..2.18.19..5.21..7

..9.10.25.20.12.22.29.30....9.18.11.26.27.28.29.15....9.10.25.20.12.22.15.30

.16.32.33.34.35.21.37.23...17.32.33.34.20.22.23.38...17.32.33.34.35.36.37.23

.24.26.27.36.28.38.39.31...24.25.35.36.37.30.39.31...24.26.27.28.29.38.39.31

CROSSREFS

Cf. A264336.

Sequence in context: A259272 A085532 A146341 * A091483 A263988 A208357

Adjacent sequences:  A264332 A264333 A264334 * A264336 A264337 A264338

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 11 2015

STATUS

approved

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Last modified November 12 13:43 EST 2019. Contains 329058 sequences. (Running on oeis4.)