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 | 2 |
| 2 | 14 |
| 3 | 29 |
| 4 | 175 |
| 5 | 365 |
| 6 | 2163 |
| 7 | 4516 |
| 8 | 26703 |
| 9 | 55759 |
| 10 | 329615 |
| 11 | 688286 |
| 12 | 4068623 |
| 13 | 8495917 |
| 14 | 50221212 |
| 15 | 104869718 |
| 16 | 619907431 |
| 17 | 1294463368 |
| 18 | 7651850657 |
| 19 | 15978257251 |
| 20 | 94450905714 |
| 21 | 197228218022 |
| 22 | 1165858298498 |
| 23 | 2434493909304 |
| 24 | 14390815650209 |