A264255 Number of (n+1)X(6+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.

772, 32361, 2896729, 180566464, 13509166173, 917543249651, 65622177560404, 4563171069771635, 322153409711775557, 22555885240281592352, 1586327333187009406865, 111292563276989533960605

Offset

1,1

Comments

Column 6 of A264257.

Links

R. H. Hardin, Table of n, a(n) for n = 1..130

Example

Some solutions for n=2
..1..2..3..4..5..6.13....7..0..1..4..5.12.13....1..0..3..4..2.12..5
..0..7.10.11..9.19.12....8..9..2..3.18.11..6....8..7.10.11..9.13..6
.15..8.14.16.17.20.18...15.14.17.10.16.20.19...15.16.14.18.17.20.19

Crossrefs

Cf. A264257.

Sequence in context: A114543 A233647 A285755 * A240843 A133963 A133964

Adjacent sequences: A264252 A264253 A264254 * A264256 A264257 A264258

Keyword

nonn

Author

R. H. Hardin, Nov 09 2015

Status

approved