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

1,1

Comments

Column 4 of A278309.

Links

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

R. H. Hardin, Empirical polynomial of degree 161

Formula

Empirical polynomial of degree 161 (see link above)

Example

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

Crossrefs

Cf. A278309.

Sequence in context: A014943 A278623 A288604 * A231660 A210177 A210080

Adjacent sequences: A278302 A278303 A278304 * A278306 A278307 A278308

Keyword

nonn

Author

R. H. Hardin, Nov 17 2016

Status

approved