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A254977 Number of (n+2)X(7+2) 0..1 arrays with no 3x3 subblock diagonal sum 0 or 1 and no antidiagonal sum 0 or 1 and no row sum 0 and no column sum 0 1
94351, 2243657, 57587977, 951267911, 18669294271, 386436174713, 7506000777648, 145847668391275, 2900830105049490, 57118339761224326, 1122049943267876632, 22112705475392097501, 435706316389694278197, 8575771122835177541348 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A254978

LINKS

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

EXAMPLE

Some solutions for n=1

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

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

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

CROSSREFS

Sequence in context: A258892 A204473 A031675 * A238143 A110845 A248067

Adjacent sequences:  A254974 A254975 A254976 * A254978 A254979 A254980

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 11 2015

STATUS

approved

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Last modified July 28 10:29 EDT 2021. Contains 346326 sequences. (Running on oeis4.)