A210318 Number of (n+1)X7 0..3 arrays containing all values 0..3 with every 2X2 subblock having two or three distinct values, and new values 0..3 introduced in row major order

4963700, 45102170733, 379491677736164, 3143730516432515149, 25955987547567321154448, 214148948714201593922295166, 1766551049932868715095878774445, 14572083156439859643396552077846512

Offset

1,1

Comments

Column 6 of A210320

Links

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

Example

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

Crossrefs

Sequence in context: A222976 A157804 A151646 * A359296 A227155 A106785

Adjacent sequences: A210315 A210316 A210317 * A210319 A210320 A210321

Keyword

nonn

Author

R. H. Hardin Mar 20 2012

Status

approved