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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.
0
4, 39, 2401, 645627, 836655625, 4553473226652, 119272286997956401, 14074559363846133204591, 7713580205979095115933798976, 19229751500920174711131071039454414
OFFSET
1,1
COMMENTS
Diagonal of A264090.
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
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 03 2015
STATUS
approved