A205747 - OEIS

A205747

Number of (n+1)X3 0..2 arrays with every 2X2 subblock having the same number of equal edges as its horizontal neighbors and a different number from its vertical neighbors, and new values 0..2 introduced in row major order

48, 284, 1936, 12384, 82992, 542718, 3602578, 23691830, 156738676, 1033041690, 6824741078, 45020426618, 297261797768, 1961609742846, 12949334504402, 85463493135422, 564128280317020, 3723357621326818, 24576331604189646

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Column 2 of A205753

LINKS

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

FORMULA

Empirical: a(n) = 33*a(n-2) +76*a(n-3) +13*a(n-4) -284*a(n-5) -597*a(n-6) +484*a(n-7) +1376*a(n-8) +36*a(n-9) -752*a(n-10) -256*a(n-11) for n>12

EXAMPLE

Some solutions for n=4

..0..1..2....0..0..0....0..0..1....0..1..0....0..0..0....0..0..0....0..0..1