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 | 8 |
| 1 | 38 |
| 2 | 149 |
| 3 | 478 |
| 4 | 1390 |
| 5 | 3736 |
| 6 | 9496 |
| 7 | 23080 |
| 8 | 54127 |
| 9 | 123230 |
| 10 | 273653 |
| 11 | 594878 |
| 12 | 1269532 |
| 13 | 2665912 |
| 14 | 5518900 |
| 15 | 11280856 |
| 16 | 22797331 |
| 17 | 45599656 |
| 18 | 90362560 |
| 19 | 177550600 |
| 20 | 346157050 |
| 21 | 670060100 |
| 22 | 1288497590 |
| 23 | 2462607020 |
| 24 | 4679908400 |
| 25 | 8846662634 |