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 | 4 |
| 3 | 7 |
| 4 | 15 |
| 5 | 26 |
| 6 | 56 |
| 7 | 97 |
| 8 | 209 |
| 9 | 362 |
| 10 | 780 |
| 11 | 1351 |
| 12 | 2911 |
| 13 | 5042 |
| 14 | 10864 |
| 15 | 18817 |
| 16 | 40545 |
| 17 | 70226 |
| 18 | 151316 |
| 19 | 262087 |
| 20 | 564719 |
| 21 | 978122 |
| 22 | 2107560 |
| 23 | 3650401 |
| 24 | 7865521 |
| 25 | 13623482 |
| 26 | 29354524 |
| 27 | 50843527 |
| 28 | 109552575 |
| 29 | 189750626 |
| 30 | 408855776 |
| 31 | 708158977 |
| 32 | 1525870529 |
| 33 | 2642885282 |
| 34 | 5694626340 |