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) |
|---|---|
| 0 | 15 |
| 1 | 111 |
| 2 | 1283 |
| 3 | 18752 |
| 4 | 326593 |
| 5 | 6588344 |
| 6 | 150994943 |
| 7 | 3524450280 |
| 8 | 100077777775 |
| 9 | 3138578427934 |
| 10 | 106993479003783 |
| 11 | 3937376861542204 |
| 12 | 155568096352467863 |
| 13 | 6568408356994335930 |
| 14 | 295147905181357143919 |
| 15 | 14063084452070776884879 |
| 16 | 708235345355342213988445 |