A237211 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the upper median plus the lower median minus the minimum of every 2X2 subblock equal

256, 1160, 1160, 5130, 8396, 5130, 24478, 59386, 59386, 24478, 117800, 472096, 655186, 472096, 117800, 581660, 3795060, 8448682, 8448682, 3795060, 581660, 2899672, 31758656, 107553623, 185371924, 107553623, 31758656, 2899672

Offset

1,1

Comments

Table starts

.......256.........1160...........5130.............24478..............117800

......1160.........8396..........59386............472096.............3795060

......5130........59386.........655186...........8448682...........107553623

.....24478.......472096........8448682.........185371924..........3917422192

....117800......3795060......107553623........3917422192........131209756954

....581660.....31758656.....1448414238.......89734494932.......4937949728725

...2899672....268073808....19305898426.....1999471396100.....174915940209829

..14622828...2299621682...264733943408....46699481853014....6720032915022118

..74221442..19798836956..3593534378650..1063936806945636..244904587362771736

.379011938.171720524760.49695732377361.25099790888660098.9553718420124306088

Links

R. H. Hardin, Table of n, a(n) for n = 1..112

Formula

Empirical for column k:

k=1: [linear recurrence of order 33]

k=2: [order 97]

Example

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

Crossrefs

Sequence in context: A237293 A206118 A206111 * A237204 A237007 A237000

Adjacent sequences: A237208 A237209 A237210 * A237212 A237213 A237214

Keyword

nonn,tabl

Author

R. H. Hardin, Feb 05 2014

Status

approved