A242452 - cp's OEIS frontend

A242452 Number of length n words on {1,2,3} with no more than one consecutive 1 and no more than two consecutive 2's and no more than three consecutive 3's.

n	a(n)
0	1
1	3
2	8
3	21
4	54
5	140
6	362
7	937
8	2425
9	6275
10	16239
11	42024
12	108751
13	281430
14	728295
15	1884709
16	4877320
17	12621710
18	32662931
19	84526348
20	218740428
21	566064618
22	1464883079
23	3790878933
24	9810177543
25	25387142435
26	65697791726
27	170015189725
28	439971633412
29	1138574962157

[1, 3, 8, 21, 54, 140, 362, 937, 2425, 6275, 16239, 42024, 108751, 281430, 728295, 1884709, 4877320, 12621710, 32662931, 84526348, 218740428, 566064618, 1464883079, 3790878933, 9810177543, 25387142435, 65697791726, 170015189725, 439971633412, 1138574962157]

cp's OEIS Frontend

A242452 Number of length n words on {1,2,3} with no more than one consecutive 1 and no more than two consecutive 2's and no more than three consecutive 3's.

Table of values

List of values