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A210314 Number of (n+1)X3 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
35, 4125, 279526, 16048775, 863174816, 45102170733, 2324938770750, 119066365167743, 6078269658276164, 309804771379081797, 15778253418814486642, 803272327276093831503, 40886881399081354971416 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A210320

LINKS

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

FORMULA

Empirical: a(n) = 79*a(n-1) -1474*a(n-2) +1450*a(n-3) +39515*a(n-4) -30297*a(n-5) -122076*a(n-6) +99228*a(n-7) +43912*a(n-8) -53472*a(n-9) +11232*a(n-10)

EXAMPLE

Some solutions for n=4

..0..0..0....0..1..0....0..1..0....0..0..0....0..1..0....0..0..0....0..0..1

..1..1..1....0..1..0....0..0..1....0..1..1....0..1..0....0..1..0....2..3..0

..0..0..2....2..0..2....1..1..0....1..0..1....0..1..0....1..0..1....1..2..0

..3..3..0....1..1..0....2..3..0....1..2..2....0..1..1....2..1..1....0..1..0

..0..2..2....3..3..0....1..1..1....1..0..3....0..2..3....0..0..3....0..2..0

CROSSREFS

Sequence in context: A202578 A213404 A249887 * A294851 A266053 A115963

Adjacent sequences:  A210311 A210312 A210313 * A210315 A210316 A210317

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 20 2012

STATUS

approved

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Last modified October 22 18:45 EDT 2021. Contains 348175 sequences. (Running on oeis4.)