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 | 2 |
| 2 | 7 |
| 3 | 17 |
| 4 | 103 |
| 5 | 467 |
| 6 | 6577 |
| 7 | 17189 |
| 8 | 61627 |
| 9 | 109919 |
| 10 | 130531 |
| 11 | 198109 |
| 12 | 239579 |
| 13 | 399557 |
| 14 | 559313 |
| 15 | 1291909 |
| 16 | 1807609 |
| 17 | 2851951 |
| 18 | 3644479 |
| 19 | 5189339 |
| 20 | 5659651 |
| 21 | 6794993 |
| 22 | 6905357 |
| 23 | 7359091 |
| 24 | 9795109 |
| 25 | 19405363 |
| 26 | 20319427 |
| 27 | 36052151 |
| 28 | 40343053 |
| 29 | 42229639 |
| 30 | 44970689 |