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 | 3 |
| 2 | 1 |
| 3 | 24 |
| 4 | 19 |
| 5 | 431 |
| 6 | 14 |
| 7 | 7589 |
| 8 | 311 |
| 9 | 5559 |
| 10 | 241 |
| 11 | 2345179 |
| 12 | 286 |
| 13 | 41223001 |
| 14 | 4229 |
| 15 | 70051 |
| 16 | 95471 |
| 17 | 12736968311 |
| 18 | 5309 |
| 19 | 223887209309 |
| 20 | 88321 |
| 21 | 21607111 |
| 22 | 1306469 |
| 23 | 69176042380099 |
| 24 | 94846 |
| 25 | 2821250547551 |
| 26 | 22964761 |
| 27 | 160204320879 |
| 28 | 27289081 |
| 29 | 375703599163598591 |
| 30 | 119641 |