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A252267
Number of (n+2) X (6+2) 0..3 arrays with every 3 X 3 subblock row, column, diagonal and antidiagonal sum not equal to 2 3 4 6 or 7.
1
2900, 17008, 122506, 800946, 5217924, 34351677, 225314758, 1478226653, 9717153148, 63795462094, 418649646607, 2748809210377, 18049979171913, 118504214119528, 778005088796521, 5108005033209650, 33536938748132854
OFFSET
1,1
COMMENTS
Column 6 of A252269.
FORMULA
Empirical recurrence of order 71 (see link above).
EXAMPLE
Some solutions for n=3
..0..0..1..0..0..0..0..0....3..3..3..3..3..3..2..3....3..3..3..3..3..3..3..2
..0..0..0..0..0..0..0..0....2..3..3..3..3..3..3..2....2..3..3..3..2..3..3..3
..0..0..0..0..0..1..0..0....3..3..3..3..3..3..3..3....3..3..3..3..3..3..3..3
..0..0..0..1..0..0..0..1....3..3..3..3..2..3..3..3....3..3..3..3..3..2..3..3
..0..1..0..0..0..0..1..0....2..3..3..3..3..3..3..2....3..3..3..2..3..3..3..2
CROSSREFS
Cf. A252269.
Sequence in context: A219963 A340201 A235102 * A207281 A207477 A207533
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 16 2014
STATUS
approved