A194534 - cp's OEIS frontend

A194534 Number of lower triangles of an n X n 0..2 array with new values introduced in row major order 0..2 and no element equal to more than one horizontal or vertical neighbor.

n	a(n)
1	1
2	4
3	59
4	1851
5	119548
6	16039294
7	4460214471
8	2572187445993
9	3075932897564028
10	7627704068111688574
11	39223874584658826539499
12	418261269510360187893175534
13	9248796169262343437995449320699
14	424095060368117191810477243815045914

[1, 4, 59, 1851, 119548, 16039294, 4460214471, 2572187445993, 3075932897564028, 7627704068111688574, 39223874584658826539499, 418261269510360187893175534, 9248796169262343437995449320699, 424095060368117191810477243815045914]

cp's OEIS Frontend

A194534 Number of lower triangles of an n X n 0..2 array with new values introduced in row major order 0..2 and no element equal to more than one horizontal or vertical neighbor.

Table of values

List of values