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A251778 Number of (n+2)X(7+2) 0..3 arrays with every 3X3 subblock row and column sum 3 or 6 and every diagonal and antidiagonal sum not 3 or 6 1
55766, 1317638, 9758786, 60326174, 1341002006, 10300749962, 63113882510, 1412118575318, 10829849843426, 66416445639470, 1485781706304062, 11396019453393170, 69887054317270646, 1563452949340108814 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A251779

LINKS

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

R. H. Hardin, Empirical recurrence of order 64

FORMULA

Empirical recurrence of order 64 (see link above)

EXAMPLE

Some solutions for n=1

..1..0..2..1..0..2..1..3..2....0..3..0..3..3..0..3..0..3

..3..0..0..3..3..0..3..0..0....1..2..0..1..2..3..1..2..0

..2..3..1..2..3..1..2..3..1....2..1..3..2..1..3..2..1..0

CROSSREFS

Sequence in context: A061740 A184094 A116206 * A203866 A205093 A206081

Adjacent sequences:  A251775 A251776 A251777 * A251779 A251780 A251781

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 08 2014

STATUS

approved

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Last modified April 11 16:42 EDT 2021. Contains 342888 sequences. (Running on oeis4.)