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 | 1225 |
| 2 | 1237 |
| 3 | 1258 |
| 4 | 1300 |
| 5 | 1378 |
| 6 | 1534 |
| 7 | 1834 |
| 8 | 2434 |
| 9 | 3610 |
| 10 | 5962 |
| 11 | 10618 |
| 12 | 19930 |
| 13 | 38458 |
| 14 | 75514 |
| 15 | 149434 |
| 16 | 297274 |
| 17 | 592570 |
| 18 | 1183162 |
| 19 | 2363578 |
| 20 | 4724410 |
| 21 | 9444538 |
| 22 | 18884794 |
| 23 | 37762234 |
| 24 | 75517114 |
| 25 | 151020730 |
| 26 | 302027962 |
| 27 | 604030138 |
| 28 | 1208034490 |
| 29 | 2416018618 |