A264875 Number of (n+1)X(5+1) arrays of permutations of 0..n*6+5 with each element having directed index change 0,1 0,-1 -2,0 or 1,1.

1, 7, 65, 572, 3613, 19372, 103585, 629654, 3930725, 23940621, 142473267, 842856777, 5016418697, 30065544899, 180338347093, 1079186020543, 6447895527277, 38523254178658, 230312221421636, 1377482024204996

Offset

1,2

Comments

Column 5 of A264878.

Links

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

Example

Some solutions for n=4
.12..2..3..4..5.17....1..0..3..2..5.17...12..2..3.15..5.17....1.13..3.15..5.17
..7..0..1.10.11.23...18..6..7..8.11..4....7..0..1..8.11..4...18..0..9..2.11..4
.24..6.26..8..9.29...13.12.15.16..9.10...24..6.13.14..9.10...24..6..7..8.28.10
.19.20.13.14.15.16...19.20.21.14.23.22...19.18.21.22.23.16...19.12.21.14.23.16
.25.18.27.28.21.22...25.24.27.26.29.28...25.26.27.20.29.28...25.26.27.20.29.22

Crossrefs

Cf. A264878.

Sequence in context: A174508 A253802 A220597 * A083302 A099342 A051550

Adjacent sequences: A264872 A264873 A264874 * A264876 A264877 A264878

Keyword

nonn

Author

R. H. Hardin, Nov 27 2015

Status

approved