A194779 - cp's OEIS frontend

A194779 Number of lower triangles of a (2n-1)X(2n-1) 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.

%I A194779 #8 Jul 22 2025 12:36:14
%S A194779 1,7,43,268,1740,11862,85013,639760,5045610,41615165,358185399,
%T A194779 3210667490,29914284833,289187621900,2895861006415
%N A194779 Number of lower triangles of a (2n-1)X(2n-1) 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 A194779 Row 1 of A194778
%e A194779 All solutions for n=2 containing a 2
%e A194779 ..0
%e A194779 ..1.1
%e A194779 ..1.1.2
%K A194779 nonn
%O A194779 1,2
%A A194779 _R. H. Hardin_ Sep 02 2011

cp's OEIS Frontend

A194779 Number of lower triangles of a (2n-1)X(2n-1) 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.