A278360 Number of nX5 0..1 arrays with rows and columns in lexicographic nondecreasing order but with exactly one mistake.

20, 281, 3183, 34038, 366982, 4058169, 44208465, 451571539, 4213513472, 35702217342, 275765596545, 1955472740426, 12826024056862, 78357459733281, 448627173302773, 2420105832394544, 12358148308045511, 59981333718872012

Offset

1,1

Comments

Column 5 of A278363.

Links

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

R. H. Hardin, Empirical polynomial of degree 63

Formula

Empirical polynomial of degree 63 (see link above)

Example

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

Crossrefs

Cf. A278363.

Sequence in context: A244653 A012836 A028294 * A019040 A021204 A017953

Adjacent sequences: A278357 A278358 A278359 * A278361 A278362 A278363

Keyword

nonn

Author

R. H. Hardin, Nov 19 2016

Status

approved