A252087 - OEIS

A252087

Number of (n+2)X(7+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 1 3 or 4

8389, 55703, 457442, 3603209, 28883234, 235656844, 1915241208, 15577211975, 127024329067, 1035087495381, 8431107450808, 68706137836738, 559991811143748, 4563752255803031, 37191534566124117, 303095308858045260

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

OFFSET

1,1

COMMENTS

Column 7 of A252088

LINKS

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

EXAMPLE

Some solutions for n=2

..2..2..2..2..2..2..2..2..2....0..0..0..0..0..2..0..0..2

..2..2..2..2..2..2..2..2..2....2..0..0..0..0..0..0..0..0

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

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

CROSSREFS

Sequence in context: A202588 A337959 A139005 * A253836 A253843 A253930

Adjacent sequences: A252084 A252085 A252086 * A252088 A252089 A252090

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 13 2014

STATUS

approved