A277670 - cp's OEIS frontend

A277670 Number of n-length words over a 7-ary alphabet {a_1,a_2,...,a_7} avoiding consecutive letters a_i, a_{i+1}.

n	a(n)
0	1
1	7
2	43
3	264
4	1621
5	9953
6	61112
7	375231
8	2303939
9	14146313
10	86859145
11	533319959
12	3274614074
13	20106311704
14	123453866991
15	758013577995
16	4654245334143
17	28577324020619
18	175466351588409
19	1077373112945523
20	6615130559166437
21	40617267861064920
22	249392273325801363

[1, 7, 43, 264, 1621, 9953, 61112, 375231, 2303939, 14146313, 86859145, 533319959, 3274614074, 20106311704, 123453866991, 758013577995, 4654245334143, 28577324020619, 175466351588409, 1077373112945523, 6615130559166437, 40617267861064920, 249392273325801363]

cp's OEIS Frontend

A277670 Number of n-length words over a 7-ary alphabet {a_1,a_2,...,a_7} avoiding consecutive letters a_i, a_{i+1}.

Table of values

List of values