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A236127 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays colored with the maximum plus the upper median minus the lower median of every 2X2 subblock 4
256, 2782, 2782, 30660, 65360, 30660, 337810, 1546388, 1546388, 337810, 3723012, 36646316, 79435700, 36646316, 3723012, 41005528, 867557598, 4076346506, 4076346506, 867557598, 41005528, 451716944, 20540949574, 209227480445 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

........256.........2782..........30660.........337810........3723012

.......2782........65360........1546388.......36646316......867557598

......30660......1546388.......79435700.....4076346506...209227480445

.....337810.....36646316.....4076346506...454310298366.50611825632254

....3723012....867557598...209227480445.50611825632254

...41005528..20540949574.10737439549324

..451716944.486339042016

.4976199592

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..39

FORMULA

Empirical for column k:

k=1: [linear recurrence of order 40]

EXAMPLE

Some solutions for n=2 k=4

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

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

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

CROSSREFS

Sequence in context: A236315 A205422 A205417 * A236124 A236949 A236942

Adjacent sequences:  A236124 A236125 A236126 * A236128 A236129 A236130

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin, Jan 19 2014

STATUS

approved

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Last modified September 17 23:07 EDT 2021. Contains 347489 sequences. (Running on oeis4.)