A252455 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 4 6 or 7

3938, 20242, 134907, 863351, 5596619, 36760486, 240708592, 1577703429, 10367458379, 68072122171, 446783070387, 2933845046205, 19268013875675, 126527744827003, 830860795856980, 5456160445875431, 35830272826754996

Offset

1,1

Comments

Column 6 of A252457

Links

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

Example

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

Crossrefs

Sequence in context: A289563 A198641 A045232 * A233688 A162859 A115929

Adjacent sequences: A252452 A252453 A252454 * A252456 A252457 A252458

Keyword

nonn

Author

R. H. Hardin, Dec 17 2014

Status

approved