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 | 35 |
| 2 | 665 |
| 3 | 9107 |
| 4 | 100751 |
| 5 | 957197 |
| 6 | 8110087 |
| 7 | 62854845 |
| 8 | 453710670 |
| 9 | 3091406010 |
| 10 | 20086835910 |
| 11 | 125465290530 |
| 12 | 758173316850 |
| 13 | 4455503465430 |
| 14 | 25571494599330 |
| 15 | 143839855533270 |
| 16 | 795332428661055 |
| 17 | 4333564250230845 |
| 18 | 23317657891319095 |