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A252104 Number of (n+2)X(7+2) 0..3 arrays with every 3X3 subblock row and column sum equal to 0 3 4 6 or 7 and every 3X3 diagonal and antidiagonal sum not equal to 0 3 4 6 or 7 1
70372, 120128, 727203, 3681127, 31734323, 204205735, 1113772174, 10036222063, 65817065181, 375634409542, 3458799808399, 22936469743309, 134114626705579, 1249716117511253, 8335445662025071, 49308479190011558, 462065009601058771 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 7 of A252105
LINKS
EXAMPLE
Some solutions for n=2
..0..1..3..3..1..3..3..0..0....2..1..1..2..1..1..2..1..1
..3..1..3..0..1..3..0..1..3....1..3..0..1..3..0..1..3..3
..1..2..1..1..2..1..1..2..1....1..0..3..1..0..3..1..0..3
..3..1..3..3..1..0..3..1..3....2..1..1..2..1..1..2..1..0
CROSSREFS
Sequence in context: A233987 A243135 A253738 * A236016 A204482 A186821
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 14 2014
STATUS
approved

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Last modified February 25 19:10 EST 2024. Contains 370332 sequences. (Running on oeis4.)