A243518 - cp's OEIS frontend

A243518 Number of length n+2 0..9 arrays with no three elements in a row with pattern aba or abb (with a!=b) and new values 0..9 introduced in 0..9 order.

n	a(n)
1	3
2	5
3	10
4	25
5	77
6	280
7	1157
8	5297
9	26443
10	142372
11	819731
12	5009281
13	32252381
14	217194296
15	1518771097
16	10952508217
17	80950970231
18	609958242292
19	4664758144295
20	36080343085145
21	281462510140633
22	2209800140157400
23	17432715938447165

[3, 5, 10, 25, 77, 280, 1157, 5297, 26443, 142372, 819731, 5009281, 32252381, 217194296, 1518771097, 10952508217, 80950970231, 609958242292, 4664758144295, 36080343085145, 281462510140633, 2209800140157400, 17432715938447165]

cp's OEIS Frontend

A243518 Number of length n+2 0..9 arrays with no three elements in a row with pattern aba or abb (with a!=b) and new values 0..9 introduced in 0..9 order.

Table of values

List of values