login
A237936
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 differing from its horizontal and vertical neighbors by exactly one
6
256, 1718, 1718, 11701, 19694, 11701, 81402, 228866, 228866, 81402, 563166, 2744048, 4554824, 2744048, 563166, 3880918, 32465580, 94068938, 94068938, 32465580, 3880918, 26804881, 383375880, 1903243716, 3422869862, 1903243716
OFFSET
1,1
COMMENTS
Table starts
........256.........1718..........11701...........81402..........563166
.......1718........19694.........228866.........2744048........32465580
......11701.......228866........4554824........94068938......1903243716
......81402......2744048.......94068938......3422869862....120261272346
.....563166.....32465580.....1903243716....120261272346...7270062501162
....3880918....383375880....38477471800...4232660312790.440610763676048
...26804881...4542257982...782578367787.149839687112404
..185489824..54067139244.16010421948796
.1282099556.641031056118
.8852862392
LINKS
FORMULA
Empirical for column k:
k=1: [linear recurrence of order 36]
EXAMPLE
Some solutions for n=2 k=4
..0..3..2..1..3....0..1..2..0..0....0..2..2..1..2....0..0..0..1..2
..0..2..1..0..0....0..2..1..2..2....0..3..3..1..1....2..2..1..3..0
..2..1..2..0..3....0..2..3..3..1....2..1..2..0..3....3..1..0..2..0
CROSSREFS
Sequence in context: A237532 A237175 A237169 * A237931 A237494 A237489
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Feb 16 2014
STATUS
approved