A236137 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays colored with the maximum plus the lower median minus the upper median minus the minimum of every 2X2 subblock

256, 2816, 2816, 31552, 67264, 31552, 351872, 1611168, 1611168, 351872, 3932416, 38691488, 83422344, 38691488, 3932416, 43917824, 929734720, 4324702912, 4324702912, 929734720, 43917824, 490505216, 22330450944, 224789303820

Offset

1,1

Comments

Table starts

........256.........2816..........31552.........351872........3932416

.......2816........67264........1611168.......38691488......929734720

......31552......1611168.......83422344.....4324702912...224789303820

.....351872.....38691488.....4324702912...487008949768.54970653029220

....3932416....929734720...224789303820.54970653029220

...43917824..22330450944.11667447732440

..490505216.536187075776

.5477885952

Links

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

Formula

Empirical for column k:

k=1: [linear recurrence of order 17]

Example

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

Crossrefs

Sequence in context: A236124 A236949 A236942 * A236134 A236588 A236585

Adjacent sequences: A236134 A236135 A236136 * A236138 A236139 A236140

Keyword

nonn,tabl

Author

R. H. Hardin, Jan 19 2014

Status

approved