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 | 4 |
| 1 | 7 |
| 2 | 12 |
| 3 | 23 |
| 4 | 43 |
| 5 | 81 |
| 6 | 150 |
| 7 | 275 |
| 8 | 498 |
| 9 | 893 |
| 10 | 1587 |
| 11 | 2799 |
| 12 | 4904 |
| 13 | 8543 |
| 14 | 14808 |
| 15 | 25555 |
| 16 | 43931 |
| 17 | 75261 |
| 18 | 128538 |
| 19 | 218923 |
| 20 | 371934 |
| 21 | 630457 |
| 22 | 1066467 |
| 23 | 1800603 |
| 24 | 3034828 |
| 25 | 5106871 |
| 26 | 8580900 |
| 27 | 14398415 |
| 28 | 24129163 |
| 29 | 40388073 |
| 30 | 67527582 |
| 31 | 112786499 |
| 32 | 188195274 |
| 33 | 313733813 |
| 34 | 522562323 |