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A252218 Number of (n+2)X(7+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 2 5 6 or 7 1
14627, 47580, 420596, 3410786, 27565870, 225314934, 1834743852, 14935638689, 121853394501, 993165752194, 8089640891856, 65918907448848, 537257266754775, 4378309348730447, 35677643317164637, 290732203739079765 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A252219

LINKS

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

EXAMPLE

Some solutions for n=2

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

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

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

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

CROSSREFS

Sequence in context: A153428 A032736 A032738 * A133858 A023683 A231118

Adjacent sequences:  A252215 A252216 A252217 * A252219 A252220 A252221

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 15 2014

STATUS

approved

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Last modified December 6 13:45 EST 2021. Contains 349563 sequences. (Running on oeis4.)