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 | 53 |
| 3 | 993 |
| 4 | 32613 |
| 5 | 2577513 |
| 6 | 39612503 |
| 7 | 1509893003 |
| 8 | 59794281893 |
| 9 | 2435292751413 |
| 10 | 165459828692703 |
| 11 | 4307041366439903 |
| 12 | 185658731463324903 |
| 13 | 8107975032968711943 |
| 14 | 358060848206529563813 |
| 15 | 21242986806159652173693 |
| 16 | 717973394997481520889893 |