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A252267 Number of (n+2)X(6+2) 0..3 arrays with every 3X3 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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A252269

LINKS

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

R. H. Hardin, Empirical recurrence of order 71

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

Sequence in context: A248109 A219963 A235102 * A207281 A207477 A207533

Adjacent sequences:  A252264 A252265 A252266 * A252268 A252269 A252270

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 16 2014

STATUS

approved

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Last modified January 29 16:58 EST 2020. Contains 331347 sequences. (Running on oeis4.)