A236588 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays colored with the maximum plus the upper median minus the minimum of every 2X2 subblock

256, 2858, 2858, 31944, 69766, 31944, 358178, 1705350, 1705350, 358178, 4013896, 41837888, 91575854, 41837888, 4013896, 44966244, 1023837022, 4933946082, 4933946082, 1023837022, 44966244, 503819820, 25082040726, 264737751595

Offset

1,1

Comments

Table starts

........256.........2858..........31944.........358178........4013896

.......2858........69766........1705350.......41837888.....1023837022

......31944......1705350.......91575854.....4933946082...264737751595

.....358178.....41837888.....4933946082...585446077352.69070033303330

....4013896...1023837022...264737751595.69070033303330

...44966244..25082040726.14235465951882

..503819820.614719795538

.5645017984

Links

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

Formula

Empirical for column k:

k=1: [linear recurrence of order 42]

Example

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

Crossrefs

Sequence in context: A236942 A236137 A236134 * A236585 A235818 A235577

Adjacent sequences: A236585 A236586 A236587 * A236589 A236590 A236591

Keyword

nonn,tabl

Author

R. H. Hardin, Jan 29 2014

Status

approved