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 | 3 |
| 2 | 9 |
| 3 | 11 |
| 4 | 17 |
| 5 | 19 |
| 6 | 41 |
| 7 | 43 |
| 8 | 81 |
| 9 | 131 |
| 10 | 169 |
| 11 | 219 |
| 12 | 241 |
| 13 | 419 |
| 14 | 681 |
| 15 | 651 |
| 16 | 849 |
| 17 | 1203 |
| 18 | 2441 |
| 19 | 1867 |
| 20 | 4369 |
| 21 | 3027 |
| 22 | 5625 |
| 23 | 12475 |
| 24 | 15457 |
| 25 | 26403 |
| 26 | 26553 |
| 27 | 48795 |
| 28 | 54561 |
| 29 | 99667 |
| 30 | 80345 |
| 31 | 158731 |
| 32 | 221313 |
| 33 | 332467 |
| 34 | 460857 |
| 35 | 375451 |
| 36 | 569345 |
| 37 | 987267 |
| 38 | 1181145 |
| 39 | 1594971 |
| 40 | 1924001 |
| 41 | 4458531 |