A263589 Number of (3+1)X(n+1) arrays of permutations of 0..n*4+3 filled by rows with each element moved a city block distance of 1 or 2, and rows and columns in increasing lexicographic order.

18, 3035, 145151, 8296414, 479355276, 24453863816, 1173005308130, 54380015507778, 2444489580748461, 107205187820814508, 4615557211555598479, 195894558236312186300, 8220519759791018782780, 341888951779349913222920

Offset

1,1

Comments

Row 3 of A263586.

Links

R. H. Hardin, Table of n, a(n) for n = 1..59

Example

Some solutions for n=3
..1..4..6.11....1..4..6.11....1..2..3..7....1..4..5.11....1..4.10.11
..9..0..2.10....8..0..5.15....9..0..4..6....8..0.10..3....9..0..7..2
.12..8.15..3...10.12..2..3...12.10..8.15...12.14..2..6...12..5..6..3
.14..5.13..7...14..9.13..7...13..5.11.14...13..9.15..7...14..8.15.13

Crossrefs

Cf. A263586.

Sequence in context: A162449 A318297 A001325 * A008994 A346209 A036214

Adjacent sequences: A263586 A263587 A263588 * A263590 A263591 A263592

Keyword

nonn

Author

R. H. Hardin, Oct 22 2015

Status

approved