A236505 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays colored with the maximum plus the minimum minus the lower median of every 2X2 subblock

256, 2632, 2632, 27458, 54110, 27458, 284408, 1116232, 1116232, 284408, 2954930, 23079872, 46503900, 23079872, 2954930, 30642966, 477377520, 1936913190, 1936913190, 477377520, 30642966, 318132117, 9873995570, 81160939773

Offset

1,1

Comments

Table starts

........256.........2632.........27458.........284408........2954930

.......2632........54110.......1116232.......23079872......477377520

......27458......1116232......46503900.....1936913190....81160939773

.....284408.....23079872....1936913190...164671652250.14038040966310

....2954930....477377520...81160939773.14038040966310

...30642966...9873995570.3386470375460

..318132117.204198122306

.3300684904

Links

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

Formula

Empirical for column k:

k=1: [linear recurrence of order 34]

Example

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

Crossrefs

Sequence in context: A235556 A236624 A236620 * A236501 A235752 A235815

Adjacent sequences: A236502 A236503 A236504 * A236506 A236507 A236508

Keyword

nonn,tabl

Author

R. H. Hardin, Jan 27 2014

Status

approved