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 A194784 Number of lower triangles of a (2n+4)X(2n+4) 0..n array with new values introduced in row major order 0..n and no element unequal to more than one horizontal or vertical neighbor 0
 43, 493, 4069, 30608, 229869, 1782111, 14399939, 121414559, 1066897441, 9753094999, 92586232382, 911156698994 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Row 6 of A194778 LINKS EXAMPLE Some solutions for n=2 containing a 2 ..0................0................0................0 ..1.1..............0.0..............1.1..............0.0 ..1.1.1............0.0.0............1.1.1............0.0.0 ..1.1.1.1..........1.1.1.1..........2.2.2.2..........1.1.1.1 ..1.1.1.1.1........1.1.1.1.1........2.2.2.2.0........1.1.1.1.0 ..1.1.1.1.1.1......2.2.2.2.2.2......2.2.2.2.0.0......1.1.1.1.0.0 ..1.1.1.1.1.1.1....2.2.2.2.2.2.2....2.2.2.2.0.0.0....1.1.1.1.0.0.2 ..1.1.1.1.1.1.1.2..2.2.2.2.2.2.2.2..2.2.2.2.0.0.0.2..1.1.1.1.0.0.2.2 CROSSREFS Sequence in context: A248206 A140849 A188133 * A184153 A184145 A238202 Adjacent sequences:  A194781 A194782 A194783 * A194785 A194786 A194787 KEYWORD nonn AUTHOR R. H. Hardin Sep 02 2011 STATUS approved

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Last modified March 23 04:46 EDT 2019. Contains 321422 sequences. (Running on oeis4.)