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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 1
4963700, 45102170733, 379491677736164, 3143730516432515149, 25955987547567321154448, 214148948714201593922295166, 1766551049932868715095878774445, 14572083156439859643396552077846512 (list; graph; refs; listen; history; text; internal format)
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 * A227155 A106785 A034607

Adjacent sequences:  A210315 A210316 A210317 * A210319 A210320 A210321

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 20 2012

STATUS

approved

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Last modified July 22 05:47 EDT 2019. Contains 325213 sequences. (Running on oeis4.)