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 | 4 |
| 2 | 8 |
| 3 | 13 |
| 4 | 20 |
| 5 | 30 |
| 6 | 46 |
| 7 | 72 |
| 8 | 116 |
| 9 | 191 |
| 10 | 320 |
| 11 | 542 |
| 12 | 924 |
| 13 | 1580 |
| 14 | 2704 |
| 15 | 4625 |
| 16 | 7900 |
| 17 | 13470 |
| 18 | 22922 |
| 19 | 38928 |
| 20 | 65980 |
| 21 | 111619 |
| 22 | 188488 |
| 23 | 317758 |
| 24 | 534840 |
| 25 | 898900 |
| 26 | 1508696 |
| 27 | 2528917 |
| 28 | 4233956 |
| 29 | 7080606 |
| 30 | 11828710 |
| 31 | 19741272 |
| 32 | 32916164 |
| 33 | 54835655 |
| 34 | 91276304 |