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A251786 Number of (n+2)X(3+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 2 3 6 or 7 1
3072, 6470, 16710, 44504, 130202, 362242, 1035154, 3188016, 9369766, 28509654, 91454234, 285327668, 914236522, 3029323780, 9884604370, 32777999406, 110731558818, 371180607532, 1254911990642, 4282512407420, 14558073177158 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A251791

LINKS

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

R. H. Hardin, Empirical recurrence of order 70

FORMULA

Empirical recurrence of order 70 (see link above)

EXAMPLE

Some solutions for n=4

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

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

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

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

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

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

CROSSREFS

Sequence in context: A224116 A183726 A137485 * A262459 A205623 A205358

Adjacent sequences:  A251783 A251784 A251785 * A251787 A251788 A251789

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 08 2014

STATUS

approved

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Last modified October 14 00:10 EDT 2019. Contains 327990 sequences. (Running on oeis4.)