cp's OEIS Frontend

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.

A281904 Expansion of Sum_{i>=1} mu(i)^2*i*x^i/(1 - x^i) / Product_{j>=1} (1 - x^j), where mu() is the Moebius function (A008683).

Table of values

n a(n)
1 1
2 4
3 9
4 16
5 31
6 58
7 93
8 144
9 221
10 343
11 502
12 733
13 1048
14 1495
15 2089
16 2881
17 3947
18 5357
19 7205
20 9618
21 12758
22 16812
23 22001
24 28623
25 37037
26 47720
27 61121
28 77973
29 99029
30 125322
31 157874
32 198205
33 247954
34 309203
35 384260
36 476116
37 588149
38 724613
39 890175
40 1090781
41 1333193
42 1625702
43 1977505
44 2400221
45 2906800
46 3513121

List of values

[1, 4, 9, 16, 31, 58, 93, 144, 221, 343, 502, 733, 1048, 1495, 2089, 2881, 3947, 5357, 7205, 9618, 12758, 16812, 22001, 28623, 37037, 47720, 61121, 77973, 99029, 125322, 157874, 198205, 247954, 309203, 384260, 476116, 588149, 724613, 890175, 1090781, 1333193, 1625702, 1977505, 2400221, 2906800, 3513121]