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%I #4 Mar 31 2012 12:36:22
%S 12,95,655,4464,31429,231395,1784723,14404136,121420974,1066906857,
%T 9753108365,92586250829,911156723851
%N Number of lower triangles of a (2n+2)X(2n+2) 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
%C Row 4 of A194778
%e Some solutions for n=2 containing a 2
%e ..0............0............0............0............0............0
%e ..1.1..........0.0..........0.0..........0.0..........0.0..........1.1
%e ..1.1.1........1.1.1........1.1.1........0.0.0........0.0.0........1.1.1
%e ..0.0.0.0......1.1.1.1......1.1.1.1......0.0.0.1......1.1.1.1......1.1.1.2
%e ..0.0.0.0.0....1.1.1.1.1....1.1.1.1.1....0.0.0.1.1....1.1.1.1.1....1.1.1.2.2
%e ..2.2.2.2.2.2..2.2.2.2.2.2..1.1.1.1.1.2..0.0.0.1.1.2..1.1.1.1.1.2..1.1.1.2.2.0
%K nonn
%O 1,1
%A _R. H. Hardin_ Sep 02 2011
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