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 | 22 |
| 2 | 484 |
| 3 | 5699 |
| 4 | 42109 |
| 5 | 230619 |
| 6 | 1026377 |
| 7 | 3907140 |
| 8 | 13135511 |
| 9 | 39889555 |
| 10 | 111242770 |
| 11 | 288488044 |
| 12 | 702553878 |
| 13 | 1619299148 |
| 14 | 3555008655 |
| 15 | 7473337157 |
| 16 | 15110365462 |
| 17 | 29495673113 |
| 18 | 55765989646 |
| 19 | 102405932407 |
| 20 | 183099750019 |
| 21 | 319441371676 |