A252217 Number of (n+2)X(6+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 2 5 6 or 7

8178, 17478, 122694, 801122, 5218112, 34351865, 225314934, 1478226841, 9717153336, 63795462270, 418649646795, 2748809210565, 18049979172089, 118504214119716, 778005088796709, 5108005033209826, 33536938748133042

Offset

1,1

Comments

Column 6 of A252219

Links

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

R. H. Hardin, Empirical recurrence of order 74

Formula

Empirical recurrence of order 74 (see link above)

Example

Some solutions for n=3
..3..3..3..3..3..3..3..3....2..1..1..1..1..1..1..1....1..1..1..2..1..1..1..1
..2..3..3..2..3..3..3..3....1..1..1..1..2..1..1..1....2..1..1..1..1..1..1..1
..3..3..3..3..3..3..3..2....1..2..1..1..1..1..1..2....1..1..1..1..1..1..1..2
..3..3..3..3..3..3..3..3....1..1..1..2..1..1..1..1....1..2..1..1..1..1..1..1
..3..2..3..3..2..3..3..3....2..1..1..1..1..1..2..1....1..1..1..2..1..1..1..1

Crossrefs

Sequence in context: A126823 A205092 A014885 * A351448 A235095 A283954

Adjacent sequences: A252214 A252215 A252216 * A252218 A252219 A252220

Keyword

nonn

Author

R. H. Hardin, Dec 15 2014

Status

approved