A264473 Number of (n+1)X(5+1) arrays of permutations of 0..n*6+5 with each element having directed index change 0,1 1,0 2,1 or -1,-1.

1, 17, 57, 456, 3540, 24773, 174927, 1262270, 8905776, 63373156, 449506816, 3184860720, 22596207841, 160137303788, 1135302681211, 8048142435691, 57049038241053, 404414221946254, 2866733296182372, 20321383697508618

Offset

1,2

Comments

Column 5 of A264476.

Links

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

R. H. Hardin, Empirical recurrence of order 84

Formula

Empirical recurrence of order 84 (see link above)

Example

Some solutions for n=4
..7..0..1.10.11..4....7..8..1.10..3..4....7..0..1.10.11..4....7..0..9.10..3..4
.13..6..2..3..9..5....0..6..2.16.17..5...13.14..2..3.17..5...13.14.15..8.17..5
.19.12..8.22.23.16...19.12.21..9.23.11...19.20.21..9.23.16....6.20..1..2.23.11
.25.26.14.15.29.17...25.13.14.15.29.22...12..6.27..8.29.22...12.26.19.28.29.22
.18.24.20.21.27.28...18.24.20.26.27.28...18.24.25.26.15.28...18.24.25.21.27.16

Crossrefs

Cf. A264476.

Sequence in context: A146570 A147209 A147239 * A146578 A146453 A146046

Adjacent sequences: A264470 A264471 A264472 * A264474 A264475 A264476

Keyword

nonn

Author

R. H. Hardin, Nov 14 2015

Status

approved