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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.

A034730 Dirichlet convolution of b_n=1 with c_n=3^(n-1).

Table of values

n a(n)
1 1
2 4
3 10
4 31
5 82
6 256
7 730
8 2218
9 6571
10 19768
11 59050
12 177430
13 531442
14 1595056
15 4783060
16 14351125
17 43046722
18 129146980
19 387420490
20 1162281262
21 3486785140
22 10460412256
23 31381059610
24 94143358444
25 282429536563
26 847289140888
27 2541865834900
28 7625599080070
29 22876792454962

List of values

[1, 4, 10, 31, 82, 256, 730, 2218, 6571, 19768, 59050, 177430, 531442, 1595056, 4783060, 14351125, 43046722, 129146980, 387420490, 1162281262, 3486785140, 10460412256, 31381059610, 94143358444, 282429536563, 847289140888, 2541865834900, 7625599080070, 22876792454962]

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

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