login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A236031
Number of (n+1)X(4+1) 0..2 arrays colored with the difference of the upper median and the lower median in each 2X2 subblock
1
8856, 93640, 965344, 11384132, 135945364, 1562942580, 18041076392, 210792493144, 2453096266960, 28456755301120, 330738388509532, 3846712748184992, 44706696393514612, 519538738634893428
OFFSET
1,1
COMMENTS
Column 4 of A236035
LINKS
EXAMPLE
Some solutions for n=2
..1..0..2..1..2....1..2..2..2..0....1..1..0..0..0....0..2..0..1..0
..1..0..2..0..1....0..1..0..2..0....1..2..0..1..2....1..0..0..2..1
..1..1..0..2..0....0..2..1..2..2....1..2..0..1..1....1..1..2..0..0
CROSSREFS
Sequence in context: A202159 A216926 A292572 * A071564 A031625 A046506
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 18 2014
STATUS
approved