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.

A138519 Expansion of q * (psi(q^5) / psi(q))^2 in powers of q where psi() is a Ramanujan theta function.

Table of values

n a(n)
1 1
2 -2
3 3
4 -6
5 11
6 -16
7 24
8 -38
9 57
10 -82
11 117
12 -168
13 238
14 -328
15 448
16 -614
17 834
18 -1114
19 1480
20 -1966
21 2592
22 -3384
23 4398
24 -5704
25 7361
26 -9436
27 12045
28 -15344
29 19470
30 -24576
31 30922
32 -38822
33 48576
34 -60548
35 75259
36 -93342
37 115454
38 -142360
39 175104
40 -214958
41 263262

List of values

[1, -2, 3, -6, 11, -16, 24, -38, 57, -82, 117, -168, 238, -328, 448, -614, 834, -1114, 1480, -1966, 2592, -3384, 4398, -5704, 7361, -9436, 12045, -15344, 19470, -24576, 30922, -38822, 48576, -60548, 75259, -93342, 115454, -142360, 175104, -214958, 263262]