A263967 Number of (3+1)X(n+1) arrays of permutations of 0..n*4+3 with each element having index change (+-,+-) 0,0 1,1 or 1,2.

25, 1685, 95161, 3801496, 180329601, 8793791605, 417374263952, 19718635628325, 935640860916425, 44391937106866449, 2104497816698168833, 99772475347949387221, 4730590358279991615088, 224290743715077656954960

Offset

1,1

Comments

Row 3 of A263964.

Links

R. H. Hardin, Table of n, a(n) for n = 1..60

Example

Some solutions for n=3
..0..1..5..3....6..1..5..3....6..4..7..5....5..1..2..3....0..1..7..3
..4..2..8..9....4..2..0..9....1..0..3..2...10..0..8..7....4..2..8.10
.13.14..7..6...14..7.12.13...14..9.10.13...14..4.15..6...13..9..5..6
.12.10.11.15...10.11..8.15...12.11..8.15...12.13.11..9...12.11.14.15

Crossrefs

Cf. A263964.

Sequence in context: A196217 A196684 A125826 * A290881 A316911 A212333

Adjacent sequences: A263964 A263965 A263966 * A263968 A263969 A263970

Keyword

nonn

Author

R. H. Hardin, Oct 30 2015

Status

approved