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.

A127393 Expansion of k/q^(1/2) in powers of q, where k is the elliptic function defined by sqrt(k) = theta_2/theta_3.

Table of values

n a(n)
0 4
1 -16
2 56
3 -160
4 404
5 -944
6 2072
7 -4320
8 8648
9 -16720
10 31360
11 -57312
12 102364
13 -179104
14 307672
15 -519808
16 864960
17 -1419456
18 2299832
19 -3682400
20 5831784
21 -9141808
22 14194200
23 -21842368
24 33329700
25 -50456352
26 75813240
27 -113107872
28 167616832
29 -246811504
30 361218392
31 -525598496

List of values

[4, -16, 56, -160, 404, -944, 2072, -4320, 8648, -16720, 31360, -57312, 102364, -179104, 307672, -519808, 864960, -1419456, 2299832, -3682400, 5831784, -9141808, 14194200, -21842368, 33329700, -50456352, 75813240, -113107872, 167616832, -246811504, 361218392, -525598496]