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 | 1 |
| 2 | 28 |
| 3 | 259 |
| 4 | 1968 |
| 5 | 9386 |
| 6 | 30842 |
| 7 | 82738 |
| 8 | 192336 |
| 9 | 400277 |
| 10 | 763984 |
| 11 | 1360797 |
| 12 | 2291056 |
| 13 | 3681226 |
| 14 | 5687022 |
| 15 | 8496534 |
| 16 | 12333352 |
| 17 | 17459691 |
| 18 | 24179516 |
| 19 | 32841667 |
| 20 | 43842984 |
| 21 | 57631432 |
| 22 | 74709226 |
| 23 | 95635956 |
| 24 | 121031712 |
| 25 | 151580209 |