A252062 Number of (n+2)X(5+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 1 2 or 4

1948, 5610, 25220, 126936, 664938, 3510697, 18508976, 97654871, 516198206, 2730269271, 14438548815, 76352728286, 403819220427, 2135971374401, 11298053010693, 59758367276460, 316078378288805, 1671854651231981

Offset

1,1

Comments

Column 5 of A252065

Links

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

R. H. Hardin, Empirical recurrence of order 98

Formula

Empirical recurrence of order 98 (see link above)

Example

Some solutions for n=4
..1..2..2..2..2..2..2....1..2..2..1..2..2..2....1..2..2..2..2..2..2
..1..2..2..2..2..1..2....2..2..2..2..2..1..2....2..2..2..2..1..2..2
..1..2..2..2..2..2..2....2..2..2..2..2..2..2....2..2..2..2..2..2..2
..1..2..2..2..2..2..2....2..1..2..2..2..2..1....2..2..2..1..2..2..2
..1..2..2..2..2..2..2....2..2..2..2..2..1..2....1..2..2..2..2..2..2
..1..2..2..1..2..2..2....2..2..2..2..1..2..2....2..2..2..2..2..2..1

Crossrefs

Sequence in context: A252151 A235003 A223464 * A251843 A249202 A249324

Adjacent sequences: A252059 A252060 A252061 * A252063 A252064 A252065

Keyword

nonn

Author

R. H. Hardin, Dec 13 2014

Status

approved