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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 (list; table; graph; refs; listen; history; text; internal format)
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

R. H. Hardin, Table of n, a(n) for n = 1..24

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

Adjacent sequences:  A186626 A186627 A186628 * A186630 A186631 A186632

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin, Feb 24 2011

STATUS

approved

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Last modified June 26 16:07 EDT 2022. Contains 354885 sequences. (Running on oeis4.)