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A278797 Number of nX6 0..3 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly two mistakes. 1
2128, 4888659, 7804657491, 11262497170744, 14688350983557860, 17132175867394310218, 17905720402390042972393, 16929268110709399178933670, 14654548270532478576848465454, 11752173813052078583219415650082 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A278798.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..18

EXAMPLE

Some solutions for n=1

..3..1..3..3..0..1. .3..0..0..3..0..1. .0..1..1..0..3..0. .0..3..0..2..2..2

CROSSREFS

Cf. A278798.

Sequence in context: A321117 A337644 A278552 * A251134 A338070 A210271

Adjacent sequences:  A278794 A278795 A278796 * A278798 A278799 A278800

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 28 2016

STATUS

approved

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Last modified January 18 12:07 EST 2021. Contains 340254 sequences. (Running on oeis4.)