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 | 41 |
| 2 | 411 |
| 3 | 2051 |
| 4 | 6981 |
| 5 | 18733 |
| 6 | 42783 |
| 7 | 86983 |
| 8 | 161993 |
| 9 | 281713 |
| 10 | 463715 |
| 11 | 729675 |
| 12 | 1105805 |
| 13 | 1623285 |
| 14 | 2318695 |
| 15 | 3234447 |
| 16 | 4419217 |
| 17 | 5928377 |
| 18 | 7824427 |
| 19 | 10177427 |
| 20 | 13065429 |
| 21 | 16574909 |
| 22 | 20801199 |
| 23 | 25848919 |
| 24 | 31832409 |
| 25 | 38876161 |
| 26 | 47115251 |
| 27 | 56695771 |
| 28 | 67775261 |
| 29 | 80523141 |
| 30 | 95121143 |