A252406 Number of (n+2)X(7+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 2 3 4 6 or 7 and every 3X3 column and antidiagonal sum not equal to 2 3 4 6 or 7

7662, 8307, 32710, 122653, 551827, 2289969, 8765249, 39649367, 163860739, 627061685, 2839245764, 11737621589, 44915317915, 203379617026, 841031366884, 3218827526753, 14576234410496, 60290108523804, 230784383770992

Offset

1,1

Comments

Column 7 of A252407

Links

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

Example

Some solutions for n=4
..2..3..2..2..0..2..2..0..2....2..0..2..2..0..2..2..3..2
..2..2..3..2..2..3..2..2..3....2..2..3..2..2..3..2..2..3
..1..3..3..1..3..3..1..3..3....1..3..3..1..3..3..1..3..3
..2..3..2..2..3..2..2..0..2....2..0..2..2..3..2..2..3..2
..2..2..3..2..2..3..2..2..3....2..2..3..2..2..3..2..2..0
..1..0..3..1..3..3..1..3..3....1..3..0..1..3..3..1..3..3

Crossrefs

Sequence in context: A252051 A038011 A205040 * A145307 A232254 A008774

Adjacent sequences: A252403 A252404 A252405 * A252407 A252408 A252409

Keyword

nonn

Author

R. H. Hardin, Dec 17 2014

Status

approved