A251641 T(n,k)=Number of (n+2)X(k+2) 0..2 arrays with some row, column, diagonal or antidiagonal in every 3X3 subblock summing to 3

17511, 429399, 429399, 10560127, 29245729, 10560127, 259228149, 2000922455, 2000922455, 259228149, 6364650023, 136454122643, 381543775543, 136454122643, 6364650023, 156279294337, 9309440987703, 72419349199493, 72419349199493

Offset

1,1

Comments

Table starts

.........17511..........429399..........10560127.........259228149

........429399........29245729........2000922455......136454122643

......10560127......2000922455......381543775543....72419349199493

.....259228149....136454122643....72419349199493.38205178788191425

....6364650023...9309440987703.13754155206272959

..156279294337.635207928799359

.3837213542225

Links

R. H. Hardin, Table of n, a(n) for n = 1..31

Example

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

Crossrefs

Sequence in context: A236806 A048256 A303996 * A251638 A234562 A321640

Adjacent sequences: A251638 A251639 A251640 * A251642 A251643 A251644

Keyword

nonn,tabl

Author

R. H. Hardin, Dec 06 2014

Status

approved