A222441 Number of nX5 0..3 arrays with entries increasing mod 4 by 0, 1 or 2 rightwards and downwards, starting with upper left zero.

81, 7203, 642249, 57289767, 5110723191, 455924913093, 40672916404629, 3628419487925547, 323690312271131451, 28876324830999722133, 2576049100980154511889, 229808641254065144560647

Offset: 1

Author

R. H. Hardin Feb 20 2013

Keywords

• nonn

Comments

Column 5 of A222444

Examples

			Some solutions for n=3
..0..0..2..2..2....0..0..0..2..2....0..0..2..2..2....0..0..0..0..0
..2..2..0..0..2....1..2..2..0..0....1..1..2..2..2....0..0..1..2..0
..2..3..1..1..2....2..3..0..1..2....1..2..0..2..0....2..0..2..0..2
		

Links

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

Formula

Empirical: a(n) = 118*a(n-1) -2811*a(n-2) +22255*a(n-3) -53860*a(n-4) -54747*a(n-5) +269406*a(n-6) -175392*a(n-7)