login
A186629
T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with 3X3 subblock sums nondecreasing rightwards and downwards.
4
262144, 9576448, 9576448, 349839616, 876951552, 349839616, 12780078472, 80485522400, 80485522400, 12780078472, 351107784608, 7188107084815, 18496850510312, 7188107084815, 351107784608, 9646003088512, 422905697694540
OFFSET
1,1
COMMENTS
Table starts
........262144.........9576448........349839616......12780078472
.......9576448.......876951552......80485522400....7188107084815
.....349839616.....80485522400...18496850510312.3990816642970118
...12780078472...7188107084815.3990816642970118
..351107784608.422905697694540
.9646003088512
LINKS
EXAMPLE
Some solutions for 5X4
..0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0
..0..0..2..0....2..0..0..3....0..0..0..0....0..0..2..2....0..0..0..0
..0..0..3..2....0..0..1..0....0..0..3..0....2..2..3..0....0..3..1..2
..0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0
..3..3..0..2....3..0..1..3....2..1..1..3....0..3..2..3....1..1..2..1
CROSSREFS
Sequence in context: A223336 A250868 A250861 * A186626 A016998 A017070
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Feb 24 2011
STATUS
approved