A264509 Number of (3+1)X(n+1) arrays of permutations of 0..n*4+3 with each element having directed index change -1,1 0,-1 0,1 or 1,0.

3, 4, 46, 211, 1235, 6613, 35356, 190821, 1011749, 5421768, 28792154, 153620113, 816896091, 4350802828, 23148597981, 123215728220, 655679557091, 3489443791907, 18569349596613, 98819234593206, 525875795408590

Offset

1,1

Comments

Row 3 of A264506.

Links

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

R. H. Hardin, Empirical recurrence of order 69

Formula

Empirical recurrence of order 69 (see link above)

Example

Some solutions for n=4
..1..0..3..7..8....1..0..3..4..8....1..2..6..7..3....1..5..6..4..8
..6..5..2..9..4....6..7..2..9.13....0.10.11..9..4....0.10..2..3.13
.11.12.16.17.13....5.15.16.17.18....5.15.13..8.18...11.15..7.12..9
.10.15.18.19.14...10.11.12.19.14...16.17.12.19.14...16.17.18.19.14

Crossrefs

Cf. A264506.

Sequence in context: A246626 A032838 A013336 * A198051 A032839 A056855

Adjacent sequences: A264506 A264507 A264508 * A264510 A264511 A264512

Keyword

nonn

Author

R. H. Hardin, Nov 15 2015

Status

approved