A210162 Number of (n+1)X6 0..3 arrays with every 2X2 subblock having two or three distinct values, and new values 0..3 introduced in row major order

393649, 908980864, 2101304030788, 4857832789667601, 11230410246683136735, 25962633684406082924528, 60020811817199659899093212, 138757026672024094981417833759, 320780607033534210335763669108271

Offset

1,1

Comments

Column 5 of A210165

Links

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

Example

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

Crossrefs

Sequence in context: A145228 A204628 A171439 * A320209 A320218 A230792

Adjacent sequences: A210159 A210160 A210161 * A210163 A210164 A210165

Keyword

nonn

Author

R. H. Hardin Mar 18 2012

Status

approved