A236254 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays colored with the maximum plus the upper median plus the lower median of every 2X2 subblock

256, 3208, 3208, 40120, 103364, 40120, 505708, 3307762, 3307762, 505708, 6373768, 107457398, 270817218, 107457398, 6373768, 80221804, 3483281438, 22624359354, 22624359354, 3483281438, 80221804, 1009767552, 112721511432, 1882056542771

Offset

1,1

Comments

Table starts

.........256..........3208...........40120...........505708..........6373768

........3208........103364.........3307762........107457398.......3483281438

.......40120.......3307762.......270817218......22624359354....1882056542771

......505708.....107457398.....22624359354....4898826311444.1053449696159322

.....6373768....3483281438...1882056542771.1053449696159322

....80221804..112721511432.156211259916826

..1009767552.3649163332072

.12713539468

Links

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

Formula

Empirical for column k:

k=1: [linear recurrence of order 48]

Example

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

Crossrefs

Sequence in context: A236133 A205033 A236130 * A236251 A344304 A070056

Adjacent sequences: A236251 A236252 A236253 * A236255 A236256 A236257

Keyword

nonn,tabl

Author

R. H. Hardin, Jan 21 2014

Status

approved