A278305 Number of nX4 0..2 arrays with rows and columns in lexicographic nondecreasing order but with exactly one mistake.

51, 2089, 70795, 2360544, 79562696, 2506281752, 69684770828, 1689884963173, 36045826631067, 685286426542689, 11759467817079518, 184109136699624075, 2653459164462630395, 35466423366457631706, 442375217765486649151

Offset: 1

Author

R. H. Hardin, Nov 17 2016

Keywords

• nonn

Comments

Column 4 of A278309.

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..210
• R. H. Hardin, Empirical polynomial of degree 161

Crossrefs

Cf. A278309.

Formula

Empirical polynomial of degree 161 (see link above)