OFFSET
1,1
COMMENTS
Column 4 of A183622.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..200
FORMULA
Empirical: a(n) = 49*a(n-1)-749*a(n-2)+2986*a(n-3)+18914*a(n-4)-143912*a(n-5)-25696*a(n-6)+1494272*a(n-7)-1042432*a(n-8)-3600384*a(n-9)+917504*a(n-10)+393216*a(n-11).
EXAMPLE
Some solutions with the first square being 0123 for 3 X 5
..0..1..0..3..2....0..1..4..3..2....0..1..0..2..0....0..1..0..3..4
..2..3..4..1..0....2..3..2..0..4....2..3..4..3..1....2..3..4..2..1
..0..1..0..3..4....4..0..4..3..2....1..0..2..0..2....4..0..1..0..4
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 06 2011
STATUS
approved