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 | 0 |
| 2 | 2 |
| 3 | 2 |
| 4 | 4 |
| 5 | 8 |
| 6 | 14 |
| 7 | 26 |
| 8 | 48 |
| 9 | 88 |
| 10 | 162 |
| 11 | 298 |
| 12 | 548 |
| 13 | 1008 |
| 14 | 1854 |
| 15 | 3410 |
| 16 | 6272 |
| 17 | 11536 |
| 18 | 21218 |
| 19 | 39026 |
| 20 | 71780 |
| 21 | 132024 |
| 22 | 242830 |
| 23 | 446634 |
| 24 | 821488 |
| 25 | 1510952 |
| 26 | 2779074 |
| 27 | 5111514 |
| 28 | 9401540 |
| 29 | 17292128 |
| 30 | 31805182 |
| 31 | 58498850 |
| 32 | 107596160 |
| 33 | 197900192 |
| 34 | 363995202 |
| 35 | 669491554 |