A264084 Number of (n+1)X(n+1) arrays of permutations of 0..(n+1)^2-1 with each element having index change +-(.,.) 0,0 0,1 or 2,-2.

4, 39, 2401, 645627, 836655625, 4553473226652, 119272286997956401, 14074559363846133204591, 7713580205979095115933798976, 19229751500920174711131071039454414

Offset

1,1

Comments

Diagonal of A264090.

Links

Table of n, a(n) for n=1..10.

Example

Some solutions for n=3
..0..1..3..9....1..0..2..3....1..0..3..2....1..0..2..3....0..1..2..9
..5..4..6.13....4..6..5.13....5..4.12.13....4..6..5..7....4..5.12..7
..2..8.10.11....9..8.10.11....8..9.10.11....8..9.10.11....8..3.11.10
.12..7.15.14...12..7.15.14....6..7.15.14...13.12.15.14....6.13.15.14

Crossrefs

Cf. A264090.

Sequence in context: A094156 A266859 A049475 * A080271 A275361 A274686

Adjacent sequences: A264081 A264082 A264083 * A264085 A264086 A264087

Keyword

nonn

Author

R. H. Hardin, Nov 03 2015

Status

approved