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 | 2 |
| 2 | 5 |
| 3 | 8 |
| 4 | 17 |
| 5 | 32 |
| 6 | 76 |
| 7 | 164 |
| 8 | 398 |
| 9 | 948 |
| 10 | 2336 |
| 11 | 5756 |
| 12 | 14460 |
| 13 | 36344 |
| 14 | 92282 |
| 15 | 235120 |
| 16 | 602348 |
| 17 | 1548320 |
| 18 | 3995602 |
| 19 | 10340300 |
| 20 | 26838896 |
| 21 | 69830576 |
| 22 | 182111414 |
| 23 | 475898036 |
| 24 | 1246011050 |
| 25 | 3267979208 |
| 26 | 8584907756 |
| 27 | 22585675348 |
| 28 | 59501499506 |
| 29 | 156955442072 |