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 | 1 |
| 2 | 7 |
| 3 | 35 |
| 4 | 168 |
| 5 | 819 |
| 6 | 4025 |
| 7 | 19796 |
| 8 | 97315 |
| 9 | 478304 |
| 10 | 2350860 |
| 11 | 11554621 |
| 12 | 56791883 |
| 13 | 279136551 |
| 14 | 1371977475 |
| 15 | 6743373646 |
| 16 | 33144194898 |
| 17 | 162906243014 |
| 18 | 800696596250 |
| 19 | 3935484773527 |
| 20 | 19343207491818 |
| 21 | 95073338508548 |
| 22 | 467292702057555 |
| 23 | 2296779231936167 |
| 24 | 11288844908179562 |