A237078 Number of (n+1)X(2+1) 0..2 arrays colored with the maximum plus the minimum minus the upper median minus the lower median of every 2X2 subblock

484, 4526, 42300, 395028, 3675408, 34334240, 320714572, 2993549732, 27915633640, 260587380516, 2432846381316, 22705793081876, 211866942104136, 1977464243096648, 18457732328302972, 172266108318326624

Offset

1,1

Comments

Column 2 of A237082

Links

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

Formula

Empirical: a(n) = 10*a(n-2) +200*a(n-3) +3494*a(n-4) +10363*a(n-5) +24691*a(n-6) +34689*a(n-7) -505130*a(n-8) -1188173*a(n-9) +1553345*a(n-10) +3053671*a(n-11) -3123651*a(n-12) -5222443*a(n-13) +618387*a(n-14) +19081478*a(n-15) +50000542*a(n-16) +154214784*a(n-17) +97630438*a(n-18) -137167730*a(n-19) +484064408*a(n-20) -223962514*a(n-21) -2119272884*a(n-22) +140443024*a(n-23) +730934940*a(n-24) -2147396648*a(n-25) -549613744*a(n-26) +1151284384*a(n-27) +1359699984*a(n-28) +1254555424*a(n-29) -443113344*a(n-30) -741621696*a(n-31) -65819904*a(n-32) +117950464*a(n-33) +33722368*a(n-34) +2539520*a(n-35)

Example

Some solutions for n=3
..0..2..0....0..2..1....0..2..0....0..0..0....0..1..2....2..2..2....1..0..2
..2..0..1....2..2..2....0..2..2....0..2..1....1..1..0....0..2..2....0..2..0
..2..2..2....2..2..0....0..1..0....2..2..0....2..2..0....2..0..1....0..0..1
..2..1..1....0..1..0....1..1..2....0..1..0....1..0..2....0..0..1....2..1..0

Crossrefs

Sequence in context: A281398 A014803 A236647 * A085120 A250614 A234780

Adjacent sequences: A237075 A237076 A237077 * A237079 A237080 A237081

Keyword

nonn

Author

R. H. Hardin, Feb 03 2014

Status

approved