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A204072 Number of (n+1)X5 0..2 arrays with every 2X2 subblock having equal diagonal elements or equal antidiagonal elements, and new values 0..2 introduced in row major order 1
938, 25277, 706454, 19934369, 563880962, 15960507749, 451830740558, 12791537916233, 362138172985082, 10252434870775373, 290255213590923014, 8217375177569472881, 232640981675680448882, 6586267002045127095221 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A204076

LINKS

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

FORMULA

Empirical: a(n) = 32*a(n-1) -55*a(n-2) -1588*a(n-3) +5428*a(n-4) -2664*a(n-5) -3936*a(n-6) +3040*a(n-7) -256*a(n-8)

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A207287 A176376 A031902 * A259641 A200428 A104917

Adjacent sequences:  A204069 A204070 A204071 * A204073 A204074 A204075

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 10 2012

STATUS

approved

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Last modified August 2 01:19 EDT 2021. Contains 346408 sequences. (Running on oeis4.)