A236087 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays colored with the difference of the upper median and the minimum in each 2X2 subblock

256, 2400, 2400, 22506, 38640, 22506, 211560, 601166, 601166, 211560, 1998580, 9486338, 15352800, 9486338, 1998580, 18841712, 150467212, 392462578, 392462578, 150467212, 18841712, 177646290, 2390621976, 10285907173, 16839382568

Offset

1,1

Comments

Table starts

..........256..........2400...........22506...........211560..........1998580

.........2400.........38640..........601166..........9486338........150467212

........22506........601166........15352800........392462578......10285907173

.......211560.......9486338.......392462578......16839382568.....744464574416

......1998580.....150467212.....10285907173.....744464574416...56798079444644

.....18841712....2390621976....269065203004...32986703622348.4323926716029622

....177646290...37935191948...7036190023429.1453213042220010

...1674513256..601817039030.183374695218144

..15787986826.9550523506046

.148843166800

Links

R. H. Hardin, Table of n, a(n) for n = 1..59

Formula

Empirical for column k:

k=1: [linear recurrence of order 29]

Example

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

Crossrefs

Sequence in context: A204309 A235416 A235261 * A204303 A236083 A016780

Adjacent sequences: A236084 A236085 A236086 * A236088 A236089 A236090

Keyword

nonn,tabl

Author

R. H. Hardin, Jan 19 2014

Status

approved