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 | 1 |
| 1 | 47 |
| 2 | 1127 |
| 3 | 18377 |
| 4 | 229171 |
| 5 | 2330589 |
| 6 | 20127092 |
| 7 | 151775596 |
| 8 | 1019876970 |
| 9 | 6201909910 |
| 10 | 34546227171 |
| 11 | 177996721677 |
| 12 | 855147273198 |
| 13 | 3856508701234 |
| 14 | 16418497039281 |
| 15 | 66308104573247 |
| 16 | 255104779810273 |
| 17 | 938387762441199 |