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A252573 Number of (n+2)X(7+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 1 2 5 6 or 7 and every 3X3 column and antidiagonal sum not equal to 1 2 5 6 or 7 1
9936, 47737, 208375, 959944, 6590930, 31059674, 155864925, 994640586, 4728064653, 24277561799, 152128655769, 724041200896, 3737920882959, 23334351446462, 111056940261198, 574039942229995, 3581491498190689 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A252574

LINKS

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

EXAMPLE

Some solutions for n=2

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

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

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

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

CROSSREFS

Sequence in context: A252227 A252622 A031856 * A266917 A031858 A254975

Adjacent sequences:  A252570 A252571 A252572 * A252574 A252575 A252576

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 18 2014

STATUS

approved

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Last modified October 23 17:29 EDT 2020. Contains 337969 sequences. (Running on oeis4.)