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 | 3 |
| 3 | 3 |
| 4 | 5 |
| 5 | 7 |
| 6 | 11 |
| 7 | 19 |
| 8 | 35 |
| 9 | 69 |
| 10 | 151 |
| 11 | 339 |
| 12 | 829 |
| 13 | 2111 |
| 14 | 5607 |
| 15 | 15737 |
| 16 | 45289 |
| 17 | 136477 |
| 18 | 423279 |
| 19 | 1353671 |
| 20 | 4471673 |
| 21 | 15114479 |
| 22 | 52605755 |
| 23 | 187162155 |
| 24 | 681817179 |
| 25 | 2539492249 |
| 26 | 9646349779 |
| 27 | 37415172217 |
| 28 | 147745308403 |
| 29 | 594368656811 |