A252268 - OEIS

A252268

Number of (n+2)X(7+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 2 3 4 6 or 7

6330, 47094, 420420, 3410622, 27565694, 225314758, 1834743688, 14935638513, 121853394325, 993165752030, 8089640891680, 65918907448672, 537257266754611, 4378309348730271, 35677643317164461, 290732203739079601

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

OFFSET

1,1

COMMENTS

Column 7 of A252269

LINKS

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

EXAMPLE

Some solutions for n=2

..3..2..3..3..3..3..3..3..3....1..0..0..0..1..0..0..0..0

..3..3..3..3..3..3..2..3..3....0..0..0..0..0..0..0..0..0

..3..3..3..3..2..3..3..3..2....0..0..0..1..0..0..0..0..1

..2..3..3..3..3..3..3..2..0....1..0..0..0..0..0..1..0..0

CROSSREFS

Sequence in context: A069428 A251024 A213993 * A292715 A296777 A292743

Adjacent sequences: A252265 A252266 A252267 * A252269 A252270 A252271

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 16 2014

STATUS

approved