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A263583 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 1 or 2, and rows and columns in increasing lexicographic order. 1
6, 134, 3035, 69084, 1643235, 38562523, 903637375, 21206120278, 497781904012, 11682193577941, 274165517770655, 6434456922985871, 151011586126096748, 3544112130933243384, 83177316133805461631, 1952101836234127241441 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A263586.

LINKS

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

R. H. Hardin, Empirical recurrence of order 84

FORMULA

Empirical recurrence of order 84 (see link above)

EXAMPLE

Some solutions for n=4

..1..3..4....1..3..8....2..3..5....2..5..8....1..2..8....1..2..4....2..4..5

..6..0..2....6..0..2....6..0..7....6..0..1....5..0..3....6..0..8....6..0..3

..7.11.14...10..5..4....9..1.14...10..3..4....9.10..6....9..3..5...10..1.14

.12..8..5...13..9..7...12..4..8...13.12..7...11..4.14...11..7.10...12..7..8

.13..9.10...14.11.12...13.10.11...14..9.11...13..7.12...13.14.12...13..9.11

CROSSREFS

Cf. A263586.

Sequence in context: A209276 A244745 A179564 * A295408 A301463 A220064

Adjacent sequences:  A263580 A263581 A263582 * A263584 A263585 A263586

KEYWORD

nonn

AUTHOR

R. H. Hardin, Oct 22 2015

STATUS

approved

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Last modified January 17 10:31 EST 2021. Contains 340214 sequences. (Running on oeis4.)