A194773 - cp's OEIS frontend

A194773 Number of lower triangles of an (n+4) X (n+4) 0..3 array with new values introduced in row major order 0..3 and no element unequal to more than one horizontal or vertical neighbor.

n	a(n)
1	43
2	105
3	265
4	655
5	1641
6	4069
7	10121
8	25025
9	61809
10	152019
11	372979
12	912017
13	2224175
14	5408825
15	13120905
16	31752431
17	76673045
18	184762437
19	444388957
20	1066954113
21	2557518625
22	6121119363
23	14629468735
24	34918297649
25	83242029523
26	198212839881

[43, 105, 265, 655, 1641, 4069, 10121, 25025, 61809, 152019, 372979, 912017, 2224175, 5408825, 13120905, 31752431, 76673045, 184762437, 444388957, 1066954113, 2557518625, 6121119363, 14629468735, 34918297649, 83242029523, 198212839881]

cp's OEIS Frontend

A194773 Number of lower triangles of an (n+4) X (n+4) 0..3 array with new values introduced in row major order 0..3 and no element unequal to more than one horizontal or vertical neighbor.

Table of values

List of values