A252029 Number of (n+2)X(5+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 2 or 4

1805, 5285, 24664, 126920, 672903, 3560831, 18791972, 99214423, 524431707, 2773560231, 14668200861, 77569992820, 410248950984, 2169924794189, 11477536641401, 60707460691069, 321095432494659, 1698369603182256

Offset

1,1

Comments

Column 5 of A252032

Links

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

R. H. Hardin, Empirical recurrence of order 83

Formula

Empirical recurrence of order 83 (see link above)

Example

Some solutions for n=4
..2..1..2..2..2..2..2....2..2..2..1..2..2..1....2..0..1..2..2..2..2
..1..2..2..2..2..1..2....2..2..2..2..2..2..1....2..1..2..2..2..1..2
..2..2..1..2..2..2..2....1..2..2..2..2..2..1....1..2..2..1..2..2..2
..2..2..2..2..1..2..2....2..1..2..2..2..2..1....2..2..2..2..2..2..2
..2..1..2..2..2..2..1....0..2..1..2..2..2..1....2..2..2..2..1..2..2
..2..2..2..2..2..2..2....1..0..2..1..2..2..1....2..2..1..2..2..2..1

Crossrefs

Sequence in context: A248063 A256027 A196788 * A250385 A345765 A035868

Adjacent sequences: A252026 A252027 A252028 * A252030 A252031 A252032

Keyword

nonn

Author

R. H. Hardin, Dec 12 2014

Status

approved