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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.

A194717 Number of n-ary words beginning with the first character of the alphabet, that can be built by inserting five doublets into the initially empty word.

Table of values

n a(n)
0 0
1 1
2 126
3 1181
4 4966
5 14289
6 32966
7 65821
8 118686
9 198401
10 312814
11 470781
12 682166
13 957841
14 1309686
15 1750589
16 2294446
17 2956161
18 3751646
19 4697821
20 5812614
21 7114961
22 8624806
23 10363101
24 12351806
25 14613889
26 17173326
27 20055101
28 23285206
29 26890641
30 30899414
31 35340541

List of values

[0, 1, 126, 1181, 4966, 14289, 32966, 65821, 118686, 198401, 312814, 470781, 682166, 957841, 1309686, 1750589, 2294446, 2956161, 3751646, 4697821, 5812614, 7114961, 8624806, 10363101, 12351806, 14613889, 17173326, 20055101, 23285206, 26890641, 30899414, 35340541]

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

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