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 | 2 |
| 1 | 11 |
| 2 | 97 |
| 3 | 691 |
| 4 | 4637 |
| 5 | 28687 |
| 6 | 171529 |
| 7 | 994837 |
| 8 | 5653807 |
| 9 | 31643347 |
| 10 | 174978379 |
| 11 | 958200857 |
| 12 | 5205329029 |
| 13 | 28089376111 |
| 14 | 150722620067 |
| 15 | 804829625447 |
| 16 | 4279524344539 |
| 17 | 22671428650501 |
| 18 | 119712643014673 |
| 19 | 630280777956749 |
| 20 | 3309723954037103 |
| 21 | 17339016680833993 |
| 22 | 90641632321932691 |
| 23 | 472916224088644129 |
| 24 | 2463008836130170681 |