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A252074 Number of (n+2)X(7+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 3 or 4 1
3279, 23091, 206747, 1669294, 13460641, 110131513, 896763044, 7301549024, 59570598626, 485457428288, 3954090473063, 32222610105491, 262627685087219, 2140187356615074, 17439608164244761, 142114394703257745 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A252075

LINKS

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

EXAMPLE

Some solutions for n=2

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

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

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

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

CROSSREFS

Sequence in context: A152506 A309284 A015326 * A281294 A043472 A203859

Adjacent sequences:  A252071 A252072 A252073 * A252075 A252076 A252077

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 13 2014

STATUS

approved

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Last modified August 18 16:18 EDT 2022. Contains 356215 sequences. (Running on oeis4.)