A184231 - OEIS

A184231

T(n,k)=Half the number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock diagonal sum differing from its antidiagonal sum by more than 3

15, 57, 57, 180, 411, 180, 621, 2318, 2318, 621, 2061, 14641, 20958, 14641, 2061, 6966, 88103, 224156, 224156, 88103, 6966, 23355, 541936, 2227254, 4207437, 2227254, 541936, 23355, 78597, 3302001, 22904858, 72246797, 72246797, 22904858, 3302001

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

OFFSET

1,1

COMMENTS

Table starts

.....15........57..........180.............621..............2061

.....57.......411.........2318...........14641.............88103

....180......2318........20958..........224156...........2227254

....621.....14641.......224156.........4207437..........72246797

...2061.....88103......2227254........72246797........2100723171

...6966....541936.....22904858......1292899174.......64280495958

..23355...3302001....231988508.....22718557269.....1922921988456

..78597..20204829...2366228756....402560143085....58125919236791

.264060.123402988..24059229300...7106563915316..1748844715494641

.887841.754319381.244980260166.125668351802785.52730125376777241

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..264

EXAMPLE

Some solutions for 4X3

..1..2..1....2..0..2....1..0..3....3..1..3....3..1..3....0..3..1....1..3..1

..3..0..3....0..2..0....0..3..1....0..3..1....0..3..1....2..0..2....2..0..2

..0..3..2....3..0..3....2..0..3....3..0..2....1..0..3....1..3..1....0..3..0

..3..0..3....1..2..0....1..3..2....2..3..0....0..3..0....2..0..3....2..0..1

CROSSREFS

Sequence in context: A219849 A157856 A082820 * A039341 A043164 A043944

Adjacent sequences: A184228 A184229 A184230 * A184232 A184233 A184234

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Jan 10 2011

STATUS

approved