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A252217 Number of (n+2)X(6+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 2 5 6 or 7 1
8178, 17478, 122694, 801122, 5218112, 34351865, 225314934, 1478226841, 9717153336, 63795462270, 418649646795, 2748809210565, 18049979172089, 118504214119716, 778005088796709, 5108005033209826, 33536938748133042 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A252219

LINKS

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

R. H. Hardin, Empirical recurrence of order 74

FORMULA

Empirical recurrence of order 74 (see link above)

EXAMPLE

Some solutions for n=3

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

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

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

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

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

CROSSREFS

Sequence in context: A126823 A205092 A014885 * A235095 A283954 A250939

Adjacent sequences:  A252214 A252215 A252216 * A252218 A252219 A252220

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 15 2014

STATUS

approved

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Last modified December 1 16:44 EST 2021. Contains 349430 sequences. (Running on oeis4.)