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 | 5 |
| 3 | 11 |
| 4 | 26 |
| 5 | 58 |
| 6 | 136 |
| 7 | 306 |
| 8 | 717 |
| 9 | 1625 |
| 10 | 3813 |
| 11 | 8697 |
| 12 | 20451 |
| 13 | 46909 |
| 14 | 110563 |
| 15 | 254855 |
| 16 | 602042 |
| 17 | 1393746 |
| 18 | 3299304 |
| 19 | 7666786 |
| 20 | 18182976 |
| 21 | 42391546 |
| 22 | 100704606 |
| 23 | 235452416 |
| 24 | 560147414 |
| 25 | 1312916040 |
| 26 | 3127406812 |
| 27 | 7346213746 |
| 28 | 17518138314 |
| 29 | 41228281888 |
| 30 | 98408997716 |
| 31 | 231990850378 |
| 32 | 554207752781 |
| 33 | 1308436686305 |
| 34 | 3128033585157 |