A209847 Number of (n+1)X8 0..3 arrays with every 2X2 subblock having one or two distinct values, and new values 0..3 introduced in row major order

326123, 108170155, 38265187051, 14575079152523, 5674369527018763, 2236023641962912731, 886072158946966616059, 352155097625024889148571, 140172370468095791726293883, 55840739584103536425301543483

Offset

1,1

Comments

Column 7 of A209848

Links

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

Example

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

Crossrefs

Sequence in context: A237223 A250910 A015360 * A237306 A210387 A269901

Adjacent sequences: A209844 A209845 A209846 * A209848 A209849 A209850

Keyword

nonn

Author

R. H. Hardin Mar 14 2012

Status

approved