A210129 Number of (n+1)X4 0..3 arrays with every 2X2 subblock having one, three or four distinct values, and new values 0..3 introduced in row major order

897, 84381, 7873809, 735336694, 68668190865, 6412512897051, 598825892889354, 55920742053335527, 5222101117981021055, 487660555133397778704, 45539680606576639531819, 4252676350267258941002997

Offset

1,1

Comments

Column 3 of A210134

Links

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

Formula

Empirical: a(n) = 95*a(n-1) -a(n-2) -14266*a(n-3) +20367*a(n-4) +435937*a(n-5) -1093869*a(n-6) -1923590*a(n-7) +8479272*a(n-8) -8472184*a(n-9) +1936944*a(n-10) +631296*a(n-11)

Example

Some solutions for n=4
..0..1..0..2....0..0..0..1....0..1..1..0....0..0..0..1....0..0..0..0
..0..3..3..0....2..3..2..0....0..2..3..0....1..2..3..1....0..0..0..0
..1..3..3..1....1..2..1..1....0..3..1..1....0..1..0..2....1..2..1..2
..1..2..1..2....1..0..2..3....3..1..0..2....2..1..2..3....0..1..0..3
..0..2..0..3....3..3..1..2....1..0..2..3....1..0..1..0....2..2..1..2

Crossrefs

Sequence in context: A323964 A145498 A252378 * A158408 A158409 A061044

Adjacent sequences: A210126 A210127 A210128 * A210130 A210131 A210132

Keyword

nonn

Author

R. H. Hardin Mar 17 2012

Status

approved