A278366 - OEIS

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A278366

Number of nX2 0..2 arrays with rows and columns in lexicographic nondecreasing order but with exactly three mistakes.

0, 0, 59, 1465, 19047, 194726, 1734714, 13506810, 91496261, 543067118, 2862579656, 13596395709, 58966870090, 236182156566, 882025314222, 3095734502639, 10279759883927, 32476397677376, 98079088190039, 284292946153409

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,3

COMMENTS

Column 2 of A278372.

LINKS

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

R. H. Hardin, Empirical polynomial of degree 35

FORMULA

Empirical polynomial of degree 35 (see link above)

EXAMPLE

Some solutions for n=4

..2..1. .1..0. .2..1. .2..2. .2..1. .2..0. .2..2. .2..1. .2..2. .1..0

..1..0. .1..2. .2..2. .1..0. .1..1. .1..0. .2..0. .2..2. .2..1. .0..2

..0..2. .1..0. .1..1. .0..1. .0..0. .0..0. .0..0. .0..2. .0..0. .2..1

..1..2. .0..2. .1..0. .1..0. .2..2. .1..1. .2..1. .0..1. .2..1. .0..2

CROSSREFS

Cf. A278372.

Sequence in context: A248620 A374450 A210398 * A134652 A017775 A017722

Adjacent sequences: A278363 A278364 A278365 * A278367 A278368 A278369

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 19 2016

STATUS

approved