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A237538 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the upper median minus the lower median of every 2X2 subblock equal 7
256, 1692, 1692, 11602, 23680, 11602, 83104, 330210, 330210, 83104, 598364, 4857060, 9080246, 4857060, 598364, 4364082, 70923320, 266120870, 266120870, 70923320, 4364082, 31944336, 1050283590, 7718716424, 15808900408, 7718716424 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Table starts
......256........1692.........11602............83104..............598364
.....1692.......23680........330210..........4857060............70923320
....11602......330210.......9080246........266120870..........7718716424
....83104.....4857060.....266120870......15808900408........924306101684
...598364....70923320....7718716424.....924306101684.....108563082111330
..4364082..1050283590..228011672782...55265390979178...13080735236141448
.31944336.15572216080.6746760123582.3305459406659964.1575053689185059756
LINKS
FORMULA
Empirical for column k:
k=1: [linear recurrence of order 16]
k=2: [order 38]
EXAMPLE
Some solutions for n=2 k=4
..0..0..0..2..0....0..0..2..3..2....0..0..2..3..1....0..0..2..2..0
..1..0..2..2..2....1..2..1..0..1....0..2..3..3..3....0..2..2..2..3
..1..2..2..2..0....1..2..1..0..3....0..0..2..3..2....2..3..1..2..0
CROSSREFS
Sequence in context: A237922 A238072 A238065 * A237532 A237175 A237169
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Feb 09 2014
STATUS
approved

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Last modified July 16 10:51 EDT 2024. Contains 374345 sequences. (Running on oeis4.)