A264262 Number of (6+1)X(n+1) arrays of permutations of 0..n*7+6 with each element having directed index change 0,1 0,-1 0,2 1,0 or -1,0.

441, 16401, 1273553, 132080760, 10265640512, 917543249651, 78959520889200, 6799478215099477, 591109349052616923, 51108477515475519549, 4429825028677660499856

Offset

1,1

Comments

Row 6 of A264257.

Links

Table of n, a(n) for n=1..11.

Example

Some solutions for n=2
..1..2..0....1..2..5....1..2..0....3..2..5....1..0..5....3..2..1....1..4..5
..4..5..3....0..3..8....6..7..4....0..1..4....4..3..2....0..7..4....0..7..2
..7..6.11....7..4..6....3..8..5....9.10.11....7..8.11....9..6..5....3.10.11
.12..9..8...12.13.10...12.11.14....6..7..8....6..9.10...10.13..8....6..9..8
.13.10.17....9.14.11....9.10.13...13.14.17...13.14.12...15.14.11...15.14.17
.16.15.14...16.19.20...16.17.20...12.15.20...16.15.20...12.17.16...12.13.20
.19.20.18...15.18.17...15.18.19...19.16.18...19.18.17...19.20.18...19.16.18

Crossrefs

Cf. A264257.

Sequence in context: A264305 A321337 A206467 * A232003 A221248 A220680

Adjacent sequences: A264259 A264260 A264261 * A264263 A264264 A264265

Keyword

nonn

Author

R. H. Hardin, Nov 09 2015

Status

approved