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”).

A238051
Number of (n+1)X(3+1) 0..3 arrays with the maximum plus the minimum minus the upper median minus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one
1
12352, 249664, 5166560, 107643264, 2246142916, 46940148128, 978607916368, 20366342381968, 425018025343492, 8883521543001864, 185210728399683652, 3854629980225887640, 80442685685640839192, 1681395591128610885784
OFFSET
1,1
COMMENTS
Column 3 of A238054
LINKS
EXAMPLE
Some solutions for n=1
..1..1..0..3....1..2..1..0....1..0..2..1....0..1..2..3....1..0..2..0
..1..3..1..2....3..2..0..1....2..2..2..2....0..1..3..2....0..1..0..0
CROSSREFS
Sequence in context: A255964 A274247 A045080 * A234919 A183693 A096618
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 17 2014
STATUS
approved