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 | 81 |
| 2 | 1444 |
| 3 | 25153 |
| 4 | 557439 |
| 5 | 10614316 |
| 6 | 213392087 |
| 7 | 4257307148 |
| 8 | 84514081303 |
| 9 | 1685475197497 |
| 10 | 33544066527869 |
| 11 | 667927323468328 |
| 12 | 13300345031547682 |
| 13 | 264815719570028929 |
| 14 | 5272968794893979347 |
| 15 | 104992034881743428678 |