A263504 Number of (n+1)X(2+1) arrays of permutations of 0..n*3+2 filled by rows with each element moved a city block distance of 0 1 or 2, and rows and columns in increasing lexicographic order.

48, 2282, 78306, 2785493, 101776538, 3683279274, 133026960133, 4808479742131, 173802713372738, 6281138389885133, 226994755038613609, 8203399088630864312, 296462278682139869597, 10713809820160562329300, 387184699917654176488277

Offset

1,1

Comments

Column 2 of A263506.

Links

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

Example

Some solutions for n=3
..0..3..5....0..2..4....0..2..5....0..2..5....0..3..4....0..3..5....0..3..8
..1..2..4....1..6..3....3..1..7....3..7..1....5..2..1....4..6..2....1..6..4
..8..6.10....9..7..8....4.11..8....4..9..8....8..9..7....8..1..7...10..9..2
.11..9..7...10.11..5...10..6..9....6.10.11...10..6.11....9.11.10...11..7..5

Crossrefs

Cf. A263506.

Sequence in context: A063822 A170767 A218750 * A158783 A227139 A009992

Adjacent sequences: A263501 A263502 A263503 * A263505 A263506 A263507

Keyword

nonn

Author

R. H. Hardin, Oct 19 2015

Status

approved