A278322 Number of nX5 0..1 arrays with rows and columns in lexicographic nondecreasing order but with exactly two mistakes.

6, 395, 9714, 186987, 3058990, 43798840, 570738085, 7010453565, 82490704797, 927749763030, 9874571566773, 98622311006346, 920542037366117, 8028589976371346, 65570255252201804, 503146509213296224

Offset

1,1

Comments

Column 5 of A278325.

Links

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

R. H. Hardin, Empirical polynomial of degree 95

Formula

Empirical polynomial of degree 95 (see link above)

Example

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

Crossrefs

Cf. A278325.

Sequence in context: A119645 A338115 A283228 * A229599 A290324 A306887

Adjacent sequences: A278319 A278320 A278321 * A278323 A278324 A278325

Keyword

nonn

Author

R. H. Hardin, Nov 18 2016

Status

approved