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 | 0 |
| 1 | 1 |
| 2 | 5 |
| 3 | 14 |
| 4 | 38 |
| 5 | 85 |
| 6 | 196 |
| 7 | 401 |
| 8 | 830 |
| 9 | 1615 |
| 10 | 3119 |
| 11 | 5802 |
| 12 | 10718 |
| 13 | 19246 |
| 14 | 34276 |
| 15 | 59889 |
| 16 | 103656 |
| 17 | 176801 |
| 18 | 299025 |
| 19 | 499732 |
| 20 | 828638 |
| 21 | 1360696 |
| 22 | 2218128 |
| 23 | 3586194 |
| 24 | 5759839 |
| 25 | 9184715 |
| 26 | 14557974 |
| 27 | 22929745 |
| 28 | 35916469 |
| 29 | 55942850 |
| 30 | 86695329 |
| 31 | 133671740 |
| 32 | 205144324 |
| 33 | 313380895 |
| 34 | 476667370 |