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.
n | a(n) |
---|---|
1 | 0 |
2 | 1 |
3 | 1 |
4 | 2 |
5 | 2 |
6 | 0 |
7 | 2 |
8 | 0 |
9 | -2 |
10 | -2 |
11 | 4 |
12 | 6 |
13 | 10 |
14 | 60 |
15 | 50 |
16 | 110 |
17 | 5500 |
18 | 5390 |
19 | 10890 |
20 | 58697100 |
21 | 58686210 |
22 | 117383310 |
23 | 6888781581155100 |
24 | 6888781463771790 |
25 | 13777563044926890 |
26 | 94910620919839581404684194433100 |
27 | 94910620919839567627121149506210 |