A264259 Number of (3+1)X(n+1) arrays of permutations of 0..n*4+3 with each element having directed index change 0,1 0,-1 0,2 1,0 or -1,0.

25, 180, 1920, 23805, 254393, 2896729, 32417000, 362988208, 4079574153, 45742016837, 513349384857, 5760401480068, 64634042719216, 725279709931309, 8138297524707793, 91320059100929713, 1024705806548622112

Offset

1,1

Comments

Row 3 of A264257.

Links

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

Example

Some solutions for n=4
..5..6..7..4..9....5..6..1..4..9....1..6..3..4..9....5..0..1..4..3
..0..1..2..3..8....0..7..2..3.14....0..7..2.13..8...10..7..2.13..8
.15.12.11.18.19...11.12.10..8.19....5.16.11.14.19...15..6.17.14..9
.10.17.16.13.14...16.17.15.13.18...10.15.12.17.18...16.11.12.19.18

Crossrefs

Cf. A264257.

Sequence in context: A042212 A258319 A302562 * A209858 A209851 A330126

Adjacent sequences: A264256 A264257 A264258 * A264260 A264261 A264262

Keyword

nonn

Author

R. H. Hardin, Nov 09 2015

Status

approved