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 | 5 |
| 3 | 23 |
| 4 | 67 |
| 5 | 407 |
| 6 | 527 |
| 7 | 4169 |
| 8 | 9913 |
| 9 | 33379 |
| 10 | 7583 |
| 11 | 89461 |
| 12 | 102397 |
| 13 | 1408777 |
| 14 | 1532329 |
| 15 | 8238221 |
| 16 | 17872837 |
| 17 | 316811189 |
| 18 | 343357709 |
| 19 | 6768841271 |
| 20 | 7257705647 |
| 21 | 7612437167 |
| 22 | 7993370447 |
| 23 | 189434541721 |
| 24 | 202820113921 |
| 25 | 1047296788661 |
| 26 | 1090542483461 |
| 27 | 3390610314383 |
| 28 | 3551237180783 |
| 29 | 105395281238707 |