A277668 - cp's OEIS frontend

A277668 Number of n-length words over a 5-ary alphabet {a_1,a_2,...,a_5} avoiding consecutive letters a_i, a_{i+1}.

n	a(n)
0	1
1	5
2	21
3	88
4	369
5	1547
6	6486
7	27194
8	114017
9	478042
10	2004299
11	8403476
12	35233470
13	147724276
14	619367372
15	2596837513
16	10887827441
17	45649674187
18	191396563242
19	802473294131
20	3364550422879
21	14106637106664
22	59145260271900
23	247979854176461
24	1039711513563070

[1, 5, 21, 88, 369, 1547, 6486, 27194, 114017, 478042, 2004299, 8403476, 35233470, 147724276, 619367372, 2596837513, 10887827441, 45649674187, 191396563242, 802473294131, 3364550422879, 14106637106664, 59145260271900, 247979854176461, 1039711513563070]

cp's OEIS Frontend

A277668 Number of n-length words over a 5-ary alphabet {a_1,a_2,...,a_5} avoiding consecutive letters a_i, a_{i+1}.

Table of values

List of values