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 | 8 |
| 2 | 34 |
| 3 | 95 |
| 4 | 225 |
| 5 | 494 |
| 6 | 1042 |
| 7 | 2149 |
| 8 | 4375 |
| 9 | 8840 |
| 10 | 17784 |
| 11 | 35687 |
| 12 | 71509 |
| 13 | 143170 |
| 14 | 286510 |
| 15 | 573209 |
| 16 | 1146627 |
| 17 | 2293484 |
| 18 | 4587220 |
| 19 | 9174715 |
| 20 | 18349729 |
| 21 | 36699782 |
| 22 | 73399914 |
| 23 | 146800205 |
| 24 | 293600815 |
| 25 | 587202064 |
| 26 | 1174404592 |
| 27 | 2348809679 |
| 28 | 4697619885 |