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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.

A319308 Expansion of theta_4(q)^20 in powers of q = exp(Pi i t).

Table of values

n a(n)
0 1
1 -40
2 760
3 -9120
4 77560
5 -497648
6 2508000
7 -10232640
8 34729720
9 -100906760
10 259114704
11 -606957280
12 1327461600
13 -2738111280
14 5341699520
15 -9915552192
16 17701924600
17 -30615844560
18 51294999960
19 -83279292960
20 131880275664
21 -204949382400
22 312126610080
23 -464844224960
24 680432137440

List of values

[1, -40, 760, -9120, 77560, -497648, 2508000, -10232640, 34729720, -100906760, 259114704, -606957280, 1327461600, -2738111280, 5341699520, -9915552192, 17701924600, -30615844560, 51294999960, -83279292960, 131880275664, -204949382400, 312126610080, -464844224960, 680432137440]

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

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