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 | 1 |
| 1 | 2 |
| 2 | 3 |
| 3 | 6 |
| 4 | 15 |
| 5 | 34 |
| 6 | 70 |
| 7 | 146 |
| 8 | 317 |
| 9 | 690 |
| 10 | 1480 |
| 11 | 3162 |
| 12 | 6788 |
| 13 | 14608 |
| 14 | 31395 |
| 15 | 67392 |
| 16 | 144701 |
| 17 | 310854 |
| 18 | 667793 |
| 19 | 1434310 |
| 20 | 3080542 |
| 21 | 6616676 |
| 22 | 14212315 |
| 23 | 30526804 |
| 24 | 65567936 |
| 25 | 140832740 |
| 26 | 302495240 |
| 27 | 649730544 |
| 28 | 1395554885 |
| 29 | 2997508382 |
| 30 | 6438345511 |
| 31 | 13828920758 |
| 32 | 29703127299 |