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A236887
Number of (n+1)X(2+1) 0..2 arrays with the maximum plus the upper median minus the lower median minus the minimum of every 2X2 subblock equal
1
245, 975, 4129, 19005, 91617, 464737, 2442897, 13272897, 73869017, 419482609, 2416657937, 14082031833, 82711630513, 488789176177, 2900660394265, 17268508407633, 103027230851025, 615687930858265, 3683409663312753
OFFSET
1,1
COMMENTS
Column 2 of A236893
LINKS
FORMULA
Empirical: a(n) = 14*a(n-1) -36*a(n-2) -311*a(n-3) +1782*a(n-4) -328*a(n-5) -15312*a(n-6) +26368*a(n-7) +28560*a(n-8) -103120*a(n-9) +42336*a(n-10) +79216*a(n-11) -66656*a(n-12) -8256*a(n-13) +20352*a(n-14) -4608*a(n-15)
EXAMPLE
Some solutions for n=5
..1..0..1....1..0..1....0..2..1....1..2..1....1..2..1....0..0..0....1..0..1
..1..0..1....0..1..0....2..2..1....0..1..0....2..1..2....0..1..0....1..0..1
..0..1..0....0..1..0....2..0..1....0..1..2....0..1..0....1..1..1....2..1..2
..1..2..1....1..0..1....0..0..1....1..2..1....0..1..0....1..0..1....2..1..0
..1..2..1....1..0..1....0..2..1....2..1..2....2..1..0....1..1..1....0..1..0
..1..2..1....0..1..0....1..1..0....0..1..2....0..1..0....0..1..0....2..1..0
CROSSREFS
Sequence in context: A188239 A132830 A350421 * A237161 A056264 A154080
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 01 2014
STATUS
approved