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 | 9 |
| 3 | 14 |
| 4 | 25 |
| 5 | 44 |
| 6 | 81 |
| 7 | 150 |
| 8 | 289 |
| 9 | 558 |
| 10 | 1089 |
| 11 | 2138 |
| 12 | 4225 |
| 13 | 8374 |
| 14 | 16641 |
| 15 | 33130 |
| 16 | 66049 |
| 17 | 131796 |
| 18 | 263169 |
| 19 | 525736 |
| 20 | 1050625 |
| 21 | 2100048 |
| 22 | 4198401 |
| 23 | 8394400 |
| 24 | 16785409 |
| 25 | 33566018 |
| 26 | 67125249 |
| 27 | 134240898 |
| 28 | 268468225 |
| 29 | 536917252 |
| 30 | 1073807361 |
| 31 | 2147576330 |
| 32 | 4295098369 |
| 33 | 8590119956 |
| 34 | 17180131329 |
| 35 | 34360109096 |