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A186010 1/8192 the number of (n+2)X(n+2) 0..3 arrays with no 3X3 subblock trace equal to any horizontal or vertical neighbor 3X3 subblock trace 0
32, 301296, 28935691550, 28418702031939836, 283178106619218127407323, 28654609946372050600800562086387 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A186019

LINKS

Table of n, a(n) for n=1..6.

EXAMPLE

Some solutions for 4X4

..2..0..0..0....0..0..0..0....2..0..0..0....0..0..0..0....2..0..0..0

..0..2..0..0....0..0..0..0....0..2..0..0....0..0..0..0....0..2..0..0

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

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

CROSSREFS

Sequence in context: A094814 A017297 A228427 * A017417 A286179 A017549

Adjacent sequences:  A186007 A186008 A186009 * A186011 A186012 A186013

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 10 2011

STATUS

approved

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Last modified September 18 14:52 EDT 2021. Contains 347527 sequences. (Running on oeis4.)