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 | 7 |
| 2 | 131 |
| 3 | 349 |
| 4 | 2203 |
| 5 | 4919 |
| 6 | 68927 |
| 7 | 389023 |
| 8 | 456539 |
| 9 | 1030307 |
| 10 | 1092733 |
| 11 | 2352643 |
| 12 | 2924213 |
| 13 | 3048631 |
| 14 | 4173287 |
| 15 | 5177723 |
| 16 | 5929747 |
| 17 | 6539209 |
| 18 | 15813257 |
| 19 | 19902517 |
| 20 | 22665193 |
| 21 | 25153763 |
| 22 | 30664303 |
| 23 | 34328131 |
| 24 | 59776477 |
| 25 | 61629881 |
| 26 | 76765631 |
| 27 | 97972187 |
| 28 | 122763479 |
| 29 | 127263533 |
| 30 | 133432837 |