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A252406 Number of (n+2)X(7+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 2 3 4 6 or 7 and every 3X3 column and antidiagonal sum not equal to 2 3 4 6 or 7 1
7662, 8307, 32710, 122653, 551827, 2289969, 8765249, 39649367, 163860739, 627061685, 2839245764, 11737621589, 44915317915, 203379617026, 841031366884, 3218827526753, 14576234410496, 60290108523804, 230784383770992 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A252407

LINKS

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

EXAMPLE

Some solutions for n=4

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

..2..2..3..2..2..3..2..2..3....2..2..3..2..2..3..2..2..3

..1..3..3..1..3..3..1..3..3....1..3..3..1..3..3..1..3..3

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

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

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

CROSSREFS

Sequence in context: A252051 A038011 A205040 * A145307 A232254 A008774

Adjacent sequences:  A252403 A252404 A252405 * A252407 A252408 A252409

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 17 2014

STATUS

approved

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Last modified October 27 23:01 EDT 2020. Contains 338045 sequences. (Running on oeis4.)