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 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 32 |
| 5 | 195 |
| 6 | 1982 |
| 7 | 2177 |
| 8 | 4159 |
| 9 | 6336 |
| 10 | 270271 |
| 11 | 276607 |
| 12 | 546878 |
| 13 | 823485 |
| 14 | 8781728 |
| 15 | 53513853 |
| 16 | 543920258 |
| 17 | 597434111 |
| 18 | 1141354369 |
| 19 | 1738788480 |
| 20 | 74170470529 |
| 21 | 75909259009 |
| 22 | 150079729538 |
| 23 | 225988988547 |
| 24 | 2409969615008 |
| 25 | 14685806678595 |
| 26 | 149268036400958 |