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A278633 Number of nX7 0..2 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly two mistakes. 1
1107, 932205, 541463431, 309971214338, 175644502146694, 94782697883923436, 47369705674953303984, 21685396319356730003339, 9098829152955190125398905, 3522319073864419078316881080, 1269570351401707348639148214535 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A278634.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..19

EXAMPLE

Some solutions for n=1

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

CROSSREFS

Cf. A278634.

Sequence in context: A322535 A184370 A172638 * A278413 A172739 A172815

Adjacent sequences:  A278630 A278631 A278632 * A278634 A278635 A278636

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 24 2016

STATUS

approved

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Last modified August 18 22:44 EDT 2022. Contains 356215 sequences. (Running on oeis4.)