A278185 Number of nX4 0..3 arrays with every element plus 1 mod 4 equal to some element at offset (-1,-1) (-1,0) (-1,1) (0,-1) (0,1) or (1,0), with upper left element zero.

0, 136, 13012, 1075258, 91270219, 7737459027, 656008970388, 55620335387114, 4715820197535009, 399835065589298715, 33900377809514573711, 2874274212652455298123, 243697940183994435905588

Offset: 1

Author

R. H. Hardin, Nov 14 2016

Keywords

• nonn

Comments

Column 4 of A278188.

Examples

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

Links

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

Crossrefs

Cf. A278188.