A236624 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays colored with the maximum plus the lower median of every 2X2 subblock

256, 2624, 2624, 26560, 50000, 26560, 272160, 914808, 914808, 272160, 2793840, 16988098, 28872968, 16988098, 2793840, 28623360, 316897424, 915260934, 915260934, 316897424, 28623360, 293206144, 5943956586, 29582562540

Offset

1,1

Comments

Table starts

........256.........2624........26560........272160.......2793840

.......2624........50000.......914808......16988098.....316897424

......26560.......914808.....28872968.....915260934...29582562540

.....272160.....16988098....915260934...50317280924.2821311359638

....2793840....316897424..29582562540.2821311359638

...28623360...5943956586.967196527066

..293206144.111193237764

.3004474720

Links

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

Formula

Empirical for column k:

k=1: [linear recurrence of order 31]

Example

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

Crossrefs

Sequence in context: A235779 A235559 A235556 * A236620 A236505 A236501

Adjacent sequences: A236621 A236622 A236623 * A236625 A236626 A236627

Keyword

nonn,tabl

Author

R. H. Hardin, Jan 29 2014

Status

approved