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A264377 Number of (n+1)X(6+1) arrays of permutations of 0..n*7+6 with each element having directed index change 2,-2 -1,0 -1,2 1,0 or 0,-1. 1
15, 121, 14329, 711068, 45132986, 2546661201, 149731056598, 8620411258657, 499872831041401, 28871184063697655, 1669447411395132846, 96462826329498703173, 5574683427373667949652, 322122388885074528092794 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A264379.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..136

EXAMPLE

Some solutions for n=3

..7..2..3..4..5.12.11....7..2..3..8..5.12.13....7..2..9..8..5.10.13

..0..1.10.17.18.13..6....0..1.14.11..4.17.18....0..1.16..3..4.17.18

.21..8..9.22.23.24.27...15.22.21.10..6.24.27...15.22.21.24..6.12.27

.14.15.16.25.26.19.20....9.23.16.25.26.19.20...14.23.11.25.26.19.20

CROSSREFS

Cf. A264379.

Sequence in context: A138424 A279267 A120794 * A038743 A181377 A264046

Adjacent sequences:  A264374 A264375 A264376 * A264378 A264379 A264380

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 12 2015

STATUS

approved

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Last modified June 16 19:43 EDT 2019. Contains 324155 sequences. (Running on oeis4.)