A232062 Number of nX5 0..2 arrays with every 0 next to a 1 and every 1 next to a 2 horizontally or vertically, with no adjacent values equal

10, 66, 410, 2230, 13538, 75462, 457234, 2561258, 15454594, 86936482, 522543518, 2950310558, 17671662754, 100103295530, 597736686594, 3395879611978, 20221409303002, 115182855491730, 684186672548350, 3906272828605434

Offset

1,1

Comments

Column 5 of A232065

Links

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

Formula

Empirical: a(n) = 2*a(n-1) +30*a(n-2) -47*a(n-3) +39*a(n-4) -191*a(n-5) +159*a(n-6) -134*a(n-7) +378*a(n-8) -242*a(n-9) +203*a(n-10) -439*a(n-11) +179*a(n-12) -147*a(n-13) +281*a(n-14) -62*a(n-15) +49*a(n-16) -87*a(n-17) +8*a(n-18) -6*a(n-19) +10*a(n-20) for n>22

Example

Some solutions for n=6
..2..1..2..1..0....0..2..0..1..0....2..1..0..2..0....2..1..2..1..2
..1..0..1..2..1....1..0..1..2..1....1..0..1..0..1....1..2..1..2..1
..0..1..2..1..2....2..1..2..1..0....0..1..2..1..2....2..1..0..1..2
..2..0..1..0..1....1..2..1..2..1....1..2..1..2..1....1..2..1..2..1
..1..2..0..1..2....2..1..2..1..0....2..1..2..1..0....2..1..0..1..0
..0..1..2..0..1....1..2..1..2..1....1..0..1..2..1....1..0..1..2..1

Crossrefs

Sequence in context: A177452 A033504 A163615 * A229003 A117305 A250790

Adjacent sequences: A232059 A232060 A232061 * A232063 A232064 A232065

Keyword

nonn

Author

R. H. Hardin, Nov 17 2013

Status

approved