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 | 169 |
| 2 | 5089 |
| 3 | 50391 |
| 4 | 286207 |
| 5 | 1150785 |
| 6 | 3681179 |
| 7 | 9975741 |
| 8 | 23891417 |
| 9 | 51927841 |
| 10 | 104482217 |
| 11 | 197273691 |
| 12 | 353343429 |
| 13 | 605118809 |
| 14 | 997367601 |
| 15 | 1589978367 |
| 16 | 2462102871 |
| 17 | 3715701055 |
| 18 | 5481137105 |
| 19 | 7921503361 |
| 20 | 11239970929 |
| 21 | 15684870457 |
| 22 | 21559136673 |