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A264306 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,-2 1,0 or -1,0. 1
61, 944, 51825, 1346944, 53407877, 1659712320, 59343473405, 1955070027088, 67490110411793, 2266016041549488, 77301460609942557, 2611942953465635824, 88737349845940685049, 3004808214662968371840, 101938805574695816594665 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A264299.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..78

EXAMPLE

Some solutions for n=3

..8..0..1..2..3.13..5..6....8..9..4..5..3..7.14.15....2..0..4.11.12..7..5..6

.16.11.18.10..4.15.22..7....0..1..2.10.11.12..6.23...10..1..9..3.20.15.22.23

.24..9.20.21.12.23.14.31...24.19.20.18.22.13.21.31....8.25.17.21.19.13.14.31

.26.17.25.19.27.28.29.30...16.17.25.26.27.28.29.30...16.24.18.26.27.28.29.30

CROSSREFS

Cf. A264307.

Sequence in context: A000506 A008358 A317283 * A138790 A057534 A152868

Adjacent sequences:  A264303 A264304 A264305 * A264307 A264308 A264309

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 11 2015

STATUS

approved

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Last modified February 22 05:49 EST 2019. Contains 320385 sequences. (Running on oeis4.)