A252199 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 5 6 or 7

5316, 8526, 60325, 391996, 2547827, 16789626, 110131575, 722619095, 4749948439, 31181555268, 204626875125, 1343622742688, 8822820748382, 57923805952007, 380282422081617, 2496764092390251, 16392666023439320, 107625734028805585

Offset

1,1

Comments

Column 6 of A252201

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

Crossrefs

Sequence in context: A176136 A213964 A133152 * A317917 A187853 A236274

Adjacent sequences: A252196 A252197 A252198 * A252200 A252201 A252202

Keyword

nonn

Author

R. H. Hardin, Dec 15 2014

Status

approved