A263606 Number of (4+1)X(n+1) arrays of permutations of 0..n*5+4 filled by rows with each element moved a city block distance of 0 or 2, and rows and columns in increasing lexicographic order.

60, 24091, 2736666, 248766606, 25103852988, 2343241421547, 205448127753536, 17380243003632168, 1440197440806112088, 116813202818782845844, 9335200652683628893145

Offset

1,1

Comments

Row 4 of A263602.

Links

Table of n, a(n) for n=1..11.

Example

Some solutions for n=2
..0..3..4....0..1..8....0..5..8....0..3..8....0..3..8....0..1..8....0..3..8
..1..2.11....3..4.11....1..4..3....1..2..5....1.10..7....3..2.11....1..2..5
.12..7.10....6..5..2...10.13..2...10..9..4....4..9..2....6..5..4....4.13..6
.13..6..5....7.10..9...11..6..9...11..6..7...11..6..5....7.10.13...11.14..9
.14..9..8...12.13.14...12..7.14...14.13.12...14.13.12...14..9.12...12..7.10

Crossrefs

Cf. A263602.

Sequence in context: A068295 A177643 A123482 * A220371 A092870 A221936

Adjacent sequences: A263603 A263604 A263605 * A263607 A263608 A263609

Keyword

nonn

Author

R. H. Hardin, Oct 22 2015

Status

approved