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 | 5 |
| 2 | 23 |
| 3 | 53 |
| 4 | 233 |
| 5 | 563 |
| 6 | 1259 |
| 7 | 2579 |
| 8 | 2909 |
| 9 | 12713 |
| 10 | 22543 |
| 11 | 28099 |
| 12 | 31729 |
| 13 | 39607 |
| 14 | 41017 |
| 15 | 42463 |
| 16 | 87511 |
| 17 | 110359 |
| 18 | 115279 |
| 19 | 117787 |
| 20 | 138863 |
| 21 | 141671 |
| 22 | 213533 |
| 23 | 242243 |
| 24 | 257353 |
| 25 | 265117 |
| 26 | 269069 |
| 27 | 289171 |
| 28 | 310019 |
| 29 | 318557 |
| 30 | 327193 |
| 31 | 331603 |
| 32 | 354097 |
| 33 | 372607 |
| 34 | 441101 |