A242632 - cp's OEIS frontend

A242632 Number of n-length words w over a 9-ary alphabet {a_1,...,a_9} such that w contains never more than j consecutive letters a_j (for 1<=j<=9).

n	a(n)
0	1
1	9
2	80
3	711
4	6318
5	56143
6	498896
7	4433274
8	39394819
9	350068993
10	3110771999
11	27642843622
12	245638961566
13	2182789161071
14	19396631915857
15	172361736254288
16	1531635402139359
17	13610370004776711
18	120944038906506659
19	1074729088326395697
20	9550223588843166996

[1, 9, 80, 711, 6318, 56143, 498896, 4433274, 39394819, 350068993, 3110771999, 27642843622, 245638961566, 2182789161071, 19396631915857, 172361736254288, 1531635402139359, 13610370004776711, 120944038906506659, 1074729088326395697, 9550223588843166996]

cp's OEIS Frontend

A242632 Number of n-length words w over a 9-ary alphabet {a_1,...,a_9} such that w contains never more than j consecutive letters a_j (for 1<=j<=9).

Table of values

List of values