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) |
|---|---|
| 1 | 5 |
| 2 | 49 |
| 3 | 34 |
| 4 | 141 |
| 5 | 243 |
| 6 | 516 |
| 7 | 814 |
| 8 | 1646 |
| 9 | 3312 |
| 10 | 6565 |
| 11 | 13040 |
| 12 | 25941 |
| 13 | 51679 |
| 14 | 103895 |
| 15 | 205265 |
| 16 | 411011 |
| 17 | 821599 |
| 18 | 1643914 |
| 19 | 3279755 |
| 20 | 6573928 |
| 21 | 13136700 |
| 22 | 26293574 |
| 23 | 52604464 |
| 24 | 105288984 |
| 25 | 210671989 |
| 26 | 421821199 |
| 27 | 844171966 |
| 28 | 1689881070 |
| 29 | 3382803573 |