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 | 0 |
| 1 | 16796 |
| 2 | 15737865 |
| 3 | 574221648 |
| 4 | 7766844470 |
| 5 | 60610884906 |
| 6 | 331670995656 |
| 7 | 1414591812920 |
| 8 | 5014392953273 |
| 9 | 15408077648040 |
| 10 | 42254306265171 |
| 11 | 105611585968616 |
| 12 | 244384627765200 |
| 13 | 529868222188998 |
| 14 | 1086607184873210 |
| 15 | 2123449623259536 |
| 16 | 3978448975695051 |
| 17 | 7182177974166580 |