A252500 T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum less than 5

12256, 201803, 201803, 3610840, 8200869, 3610840, 63629981, 379549048, 379549048, 63629981, 1109122552, 16121522385, 43375710311, 16121522385, 1109122552, 19357895296, 688488765345, 4543445214587, 4543445214587

Offset

1,1

Comments

Table starts

......12256.......201803.........3610840...........63629981.........1109122552

.....201803......8200869.......379549048........16121522385.......688488765345

....3610840....379549048.....43375710311......4543445214587....484455746584740

...63629981..16121522385...4543445214587...1166094457388348.302946552950286276

.1109122552.688488765345.484455746584740.302946552950286276

Links

R. H. Hardin, Table of n, a(n) for n = 1..40

Example

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

Crossrefs

Sequence in context: A204873 A135128 A166000 * A252497 A254548 A254555

Adjacent sequences: A252497 A252498 A252499 * A252501 A252502 A252503

Keyword

nonn,tabl

Author

R. H. Hardin, Dec 17 2014

Status

approved