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A252137 Number of (n+2)X(6+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 3 4 6 or 7 2
1864, 8684, 62277, 409028, 2670175, 17562129, 115183261, 755607636, 4967204787, 32613906904, 214022771560, 1405186467767, 9227158423609, 60580408167599, 397722666714982, 2611240940819477, 17144272724693612, 112560751779945146 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A252139

LINKS

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

R. H. Hardin, Empirical recurrence of order 72

FORMULA

Empirical recurrence of order 72 (see link above)

EXAMPLE

Some solutions for n=3

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

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

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

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

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

CROSSREFS

Sequence in context: A054815 A295995 A237257 * A204889 A204885 A231029

Adjacent sequences:  A252134 A252135 A252136 * A252138 A252139 A252140

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 14 2014

STATUS

approved

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Last modified July 1 22:23 EDT 2022. Contains 354984 sequences. (Running on oeis4.)