A237225 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the maximum plus the lower median minus the upper median of every 2X2 subblock equal

256, 1416, 1416, 8238, 14472, 8238, 50998, 161598, 161598, 50998, 324760, 2006382, 3460428, 2006382, 324760, 2135910, 25423162, 84409628, 84409628, 25423162, 2135910, 14272968, 338131394, 2037318606, 4161666604, 2037318606, 338131394

Offset

1,1

Comments

Table starts

......256........1416...........8238.............50998...............324760

.....1416.......14472.........161598...........2006382.............25423162

.....8238......161598........3460428..........84409628...........2037318606

....50998.....2006382.......84409628........4161666604.........194556780556

...324760....25423162.....2037318606......194556780556.......17019123155926

..2135910...338131394....52300962414.....9987152949386.....1679338583744260

.14272968..4474548444..1301392331506...478478022593736...150228922070204060

.97077068.60750922148.33744588767732.24753454408306844.14957438198616004464

Links

R. H. Hardin, Table of n, a(n) for n = 1..84

Formula

Empirical for column k:

k=1: [linear recurrence of order 26]

k=2: [order 88]

Example

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

Crossrefs

Sequence in context: A188865 A187964 A187956 * A237219 A237951 A237946

Adjacent sequences: A237222 A237223 A237224 * A237226 A237227 A237228

Keyword

nonn,tabl

Author

R. H. Hardin, Feb 05 2014

Status

approved