A263584 Number of (n+1)X(3+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.

12, 1992, 145151, 14088801, 1544467524, 162168224979, 16879917679631, 1775863143870845, 187142165389625874, 19699623733009397058, 2073969553045375908402, 218412281827791643108849

Offset

1,1

Comments

Column 3 of A263586.

Links

R. H. Hardin, Table of n, a(n) for n = 1..86

Example

Some solutions for n=3
..1..2..6..7....1..2.10.11....1..2..5..7....1..3.10.11....1..4..7.11
..8..0..9.15....5..0..4..6....6..0..9..3....9..0..5..2....5..0..3..6
.12..4.11..3...13.12..8..3...13..4..8.15...12..4..8..6...12..8..2..9
.14..5.10.13...14..9.15..7...14.12.11.10...13.14.15..7...14.10.15.13

Crossrefs

Cf. A263586.

Sequence in context: A265216 A011920 A323817 * A323816 A208252 A204622

Adjacent sequences: A263581 A263582 A263583 * A263585 A263586 A263587

Keyword

nonn

Author

R. H. Hardin, Oct 22 2015

Status

approved