A236015 Number of (n+1)X(5+1) 0..2 arrays colored with the sum of the maximum and minimum values of each 2X2 subblock

18784, 41844, 110274, 267424, 805458, 2004428, 5955918, 15032200, 44965942, 113000332, 336562898, 846777416, 2514445286, 6345831140, 18852824906, 47584208128, 141289879158, 356650318804, 1058329372746, 2672854730808

Offset

1,1

Comments

Column 5 of A236018

Links

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

Formula

Empirical: a(n) = 7*a(n-2) +10*a(n-4) +15*a(n-6) -314*a(n-8) -1389*a(n-10) +1365*a(n-12) +3415*a(n-14) +2472*a(n-16) +2424*a(n-18) +3384*a(n-20) -6192*a(n-22) +1152*a(n-24) -2304*a(n-26) for n>29

Example

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

Crossrefs

Sequence in context: A269886 A269765 A272401 * A237764 A330839 A243134

Adjacent sequences: A236012 A236013 A236014 * A236016 A236017 A236018

Keyword

nonn

Author

R. H. Hardin, Jan 18 2014

Status

approved