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A278207 Number of nX7 0..1 arrays with every element both equal and not equal to some elements at offset (-1,-1) (-1,0) (-1,1) (0,-1) (0,1) (1,-1) (1,0) or (1,1), with upper left element zero. 1
0, 2208, 251260, 23732454, 2644587148, 297169006604, 33056811286568, 3676498268449668, 409137247202506544, 45530553691308851854, 5066646847508250491070, 563817868393293695820130 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 7 of A278208.

LINKS

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

EXAMPLE

Some solutions for n=2

..0..1..1..1..0..1..1. .0..1..0..0..0..0..1. .0..1..0..0..1..0..1

..0..1..1..0..0..0..1. .1..0..0..0..1..1..0. .1..0..1..1..1..0..1

CROSSREFS

Cf. A278208.

Sequence in context: A023319 A207793 A232074 * A216408 A043659 A178458

Adjacent sequences:  A278204 A278205 A278206 * A278208 A278209 A278210

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 15 2016

STATUS

approved

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Last modified August 16 00:08 EDT 2022. Contains 356150 sequences. (Running on oeis4.)