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) |
|---|---|
| 1 | 257 |
| 2 | 824 |
| 3 | 2293 |
| 4 | 5677 |
| 5 | 13751 |
| 6 | 31240 |
| 7 | 68965 |
| 8 | 148281 |
| 9 | 310793 |
| 10 | 640839 |
| 11 | 1299608 |
| 12 | 2601118 |
| 13 | 5148674 |
| 14 | 10088995 |
| 15 | 19604270 |
| 16 | 37808312 |
| 17 | 72431966 |
| 18 | 137955751 |
| 19 | 261370700 |
| 20 | 492867363 |
| 21 | 925469673 |
| 22 | 1731093570 |
| 23 | 3226750237 |
| 24 | 5995509954 |
| 25 | 11107634611 |