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 | 5 |
| 1 | 36 |
| 2 | 149 |
| 3 | 470 |
| 4 | 1251 |
| 5 | 2954 |
| 6 | 6371 |
| 7 | 12789 |
| 8 | 24210 |
| 9 | 43637 |
| 10 | 75438 |
| 11 | 125801 |
| 12 | 203294 |
| 13 | 319545 |
| 14 | 490058 |
| 15 | 735182 |
| 16 | 1081251 |
| 17 | 1561914 |
| 18 | 2219675 |
| 19 | 3107664 |
| 20 | 4291661 |
| 21 | 5852396 |
| 22 | 7888149 |
| 23 | 10517675 |
| 24 | 13883480 |
| 25 | 18155475 |
| 26 | 23535036 |