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A264548 Number of (n+1)X(6+1) arrays of permutations of 0..n*7+6 with each element having directed index change -1,1 -1,2 1,0 or 0,-1. 1
3, 96, 764, 11728, 163744, 1994830, 25172836, 316806958, 3939510885, 49105816488, 612105030734, 7621730718736, 94917598135688, 1182099712180116, 14720466321079700, 183312321420648794, 2282783100595945090 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A264550.

LINKS

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

EXAMPLE

Some solutions for n=4

..1..7..3..4.10..6.12....1..7..3..4.10.11.12....1..2..8..4.10..6.11

..0..9..2.11.16..5.18....0..9..2.16.17..5..6....0.14.15..3.12..5.19

.15..8.17.22.23.20.13...15..8.22.18.23.20.13....7.16..9.18.23.25.13

.14.28.29.25.26.19.32...14.28.29.25.26.19.32...22.28.29.17.26.32.20

.21.30.31.24.33.34.27...21.30.31.24.33.34.27...21.30.31.24.33.34.27

CROSSREFS

Cf. A264550.

Sequence in context: A273442 A322460 A249787 * A094085 A300424 A300686

Adjacent sequences:  A264545 A264546 A264547 * A264549 A264550 A264551

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 17 2015

STATUS

approved

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Last modified September 27 22:36 EDT 2020. Contains 337388 sequences. (Running on oeis4.)