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 | 1 |
| 2 | 12 |
| 3 | 87 |
| 4 | 549 |
| 5 | 2338 |
| 6 | 9383 |
| 7 | 28783 |
| 8 | 85956 |
| 9 | 213618 |
| 10 | 518268 |
| 11 | 1100399 |
| 12 | 2370275 |
| 13 | 4457359 |
| 14 | 8595967 |
| 15 | 15130785 |
| 16 | 26913348 |
| 17 | 43848123 |
| 18 | 74308434 |
| 19 | 114423976 |
| 20 | 184270107 |
| 21 | 274414305 |
| 22 | 419987334 |
| 23 | 601573248 |
| 24 | 905711494 |
| 25 | 1247825148 |
| 26 | 1806542438 |