A265374 Number of 4Xn arrays containing n copies of 0..4-1 with no equal horizontal, vertical or antidiagonal neighbors and new values introduced sequentially from 0.

1, 10, 32, 236, 1238, 7968, 49214, 324152, 2143190, 14504394, 99426578, 689852636, 4833447174, 34171252034, 243350167280, 1744518978956, 12578806997916, 91164415152504, 663757426934364, 4852711337116032, 35610643603759148

Offset: 1

Author

R. H. Hardin, Dec 07 2015

Keywords

• nonn

Comments

Row 4 of A265373.

Examples

			Some solutions for n=4
..0..1..0..2....0..1..2..1....0..1..2..3....0..1..2..0....0..1..2..0
..3..2..1..3....2..0..3..2....2..3..0..2....2..3..1..3....2..3..1..3
..1..0..2..0....3..2..1..3....1..2..3..1....0..2..0..2....0..2..0..2
..2..3..1..3....0..3..0..1....0..1..0..3....3..1..3..1....1..3..1..3
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..41

Crossrefs

Cf. A265373.