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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A277671 Number of n-length words over an 8-ary alphabet {a_1,a_2,...,a_8} avoiding consecutive letters a_i, a_{i+1}.

Table of values

n a(n)
0 1
1 8
2 57
3 406
4 2892
5 20600
6 146736
7 1045216
8 7445184
9 53032832
10 377758463
11 2690813426
12 19166948203
13 136528196220
14 972504760052
15 6927254109472
16 49343562590512
17 351479407373632
18 2503624937520704
19 17833584831080448
20 127030508108889857
21 904851724611169300

List of values

[1, 8, 57, 406, 2892, 20600, 146736, 1045216, 7445184, 53032832, 377758463, 2690813426, 19166948203, 136528196220, 972504760052, 6927254109472, 49343562590512, 351479407373632, 2503624937520704, 17833584831080448, 127030508108889857, 904851724611169300]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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