A252290 - OEIS

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A252290

Number of (n+2)X(5+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 1 or 4

14042, 20213, 59767, 254401, 1227461, 6319654, 33076723, 173978395, 918980293, 4858189985, 25672484797, 135685650662, 717352972096, 3792709432526, 20050973671682, 106002037732954, 560409705365204, 2962812462944117

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

OFFSET

1,1

COMMENTS

Column 5 of A252293

LINKS

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

EXAMPLE

Some solutions for n=3

..2..2..2..2..2..1..2....2..1..2..2..1..2..2....1..1..1..1..1..1..1

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

..2..2..2..2..2..2..2....2..2..1..2..2..1..2....1..1..1..1..1..1..1

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

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

CROSSREFS

Sequence in context: A215944 A248999 A251612 * A229699 A181963 A140708

Adjacent sequences: A252287 A252288 A252289 * A252291 A252292 A252293

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 16 2014

STATUS

approved