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 | 6 |
| 3 | 14 |
| 4 | 34 |
| 5 | 74 |
| 6 | 166 |
| 7 | 350 |
| 8 | 746 |
| 9 | 1546 |
| 10 | 3206 |
| 11 | 6550 |
| 12 | 13386 |
| 13 | 27114 |
| 14 | 54894 |
| 15 | 110630 |
| 16 | 222794 |
| 17 | 447538 |
| 18 | 898574 |
| 19 | 1801590 |
| 20 | 3610930 |
| 21 | 7231858 |
| 22 | 14480654 |
| 23 | 28983246 |
| 24 | 58003250 |
| 25 | 116054034 |
| 26 | 232186518 |
| 27 | 464475166 |
| 28 | 929116402 |
| 29 | 1858449178 |
| 30 | 3717247638 |
| 31 | 7434950062 |
| 32 | 14870628026 |
| 33 | 29742206138 |
| 34 | 59485920374 |
| 35 | 118973809798 |
| 36 | 237950730522 |
| 37 | 475905520474 |