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 | 1 |
| 2 | 1 |
| 3 | 3 |
| 4 | 5 |
| 5 | 7 |
| 6 | 17 |
| 7 | 31 |
| 8 | 49 |
| 9 | 107 |
| 10 | 201 |
| 11 | 339 |
| 12 | 699 |
| 13 | 1327 |
| 14 | 2327 |
| 15 | 4643 |
| 16 | 8843 |
| 17 | 15895 |
| 18 | 31099 |
| 19 | 59251 |
| 20 | 108239 |
| 21 | 209239 |
| 22 | 398355 |
| 23 | 735619 |
| 24 | 1411351 |
| 25 | 2684147 |
| 26 | 4993111 |
| 27 | 9533775 |
| 28 | 18112735 |
| 29 | 33863375 |
| 30 | 64457715 |
| 31 | 122348279 |
| 32 | 229537011 |
| 33 | 436029791 |
| 34 | 827012339 |
| 35 | 1555314327 |
| 36 | 2950532447 |
| 37 | 5592873575 |
| 38 | 10536068991 |