

A236089


Number of (n+1)X(1+1) 0..2 arrays colored with the difference of the maximum and the upper median in each 2X2 subblock


1



81, 344, 1512, 6444, 28060, 119928, 519616, 2226672, 9647072, 41385504, 178859072, 768389952, 3320384320, 14272229248, 61597584640, 264983260416, 1143469114624, 4920340250112, 21219592558592, 91348908986368, 393905359921152
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OFFSET

1,1


COMMENTS

Column 1 of A236096


LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210


FORMULA

Empirical: a(n) = 12*a(n3) +220*a(n4) +120*a(n5) +736*a(n6) +464*a(n7) 176*a(n8) +224*a(n9) 256*a(n10) for n>11


EXAMPLE

Some solutions for n=5
..2..2....0..0....0..1....2..0....2..0....2..2....2..2....2..2....2..1....0..2
..0..2....1..2....0..1....2..0....2..1....2..0....2..0....1..0....2..0....2..1
..0..0....2..1....1..2....0..0....1..0....0..0....0..1....2..0....0..0....1..1
..0..1....1..0....2..1....1..1....1..0....2..1....0..1....0..0....1..2....1..0
..0..1....1..0....0..1....2..1....1..2....1..2....1..2....0..0....2..1....2..1
..1..2....2..0....0..1....2..1....2..0....1..1....2..2....0..1....1..1....0..2


CROSSREFS

Sequence in context: A236096 A237377 A237242 * A236737 A236730 A237324
Adjacent sequences: A236086 A236087 A236088 * A236090 A236091 A236092


KEYWORD

nonn


AUTHOR

R. H. Hardin, Jan 19 2014


STATUS

approved



