A264316 Number of (3+1)X(n+1) arrays of permutations of 0..n*4+3 with each element having directed index change 0,0 0,1 1,0 -1,-2 or 0,2.

1, 68, 1032, 11206, 130041, 1605061, 18898817, 221713421, 2603590141, 30590068274, 358629316808, 4202604203316, 49240804480589, 576952221011516, 6759580424358381, 79191080974685751, 927729156804024461

Offset

1,2

Comments

Row 3 of A264313.

Links

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

Example

Some solutions for n=4
..0..8..1..3..2....7..8..1..2..3....7..0..9..1..2....7..0..9..3..4
.12.13..5..7..4....0.13.14..6..4....5.13..6..3..4....5..1..2..6..8
.17..6.19.11..9....5.11.19.12..9...10.18.19..8.12...17.18.11.12.14
.10.16.15.18.14...10.15.17.16.18...15.11.16.17.14...10.16.15.13.19

Crossrefs

Cf. A264313.

Sequence in context: A360656 A254645 A281049 * A251939 A163728 A168179

Adjacent sequences: A264313 A264314 A264315 * A264317 A264318 A264319

Keyword

nonn

Author

R. H. Hardin, Nov 11 2015

Status

approved