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) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 6 |
4 | 30 |
5 | 150 |
6 | 900 |
7 | 6300 |
8 | 56700 |
9 | 550620 |
10 | 5506200 |
11 | 60568200 |
12 | 782951400 |
13 | 10351341000 |
14 | 144918774000 |
15 | 2173781610000 |
16 | 38080340298000 |
17 | 653540914026000 |
18 | 12158944705908000 |
19 | 231019949412252000 |
20 | 4855314209005260000 |
21 | 102626845031971260000 |
22 | 2275136280946849320000 |
23 | 52328134461777534360000 |