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 | 7 |
| 3 | 11 |
| 4 | 23 |
| 5 | 59 |
| 6 | 103 |
| 7 | 139 |
| 8 | 279 |
| 9 | 827 |
| 10 | 1895 |
| 11 | 2955 |
| 12 | 5655 |
| 13 | 14395 |
| 14 | 24679 |
| 15 | 32907 |
| 16 | 65815 |
| 17 | 197435 |
| 18 | 460647 |
| 19 | 723851 |
| 20 | 1512983 |
| 21 | 3881019 |
| 22 | 6774887 |
| 23 | 9142411 |
| 24 | 18219287 |
| 25 | 54002491 |
| 26 | 123733863 |
| 27 | 192940939 |
| 28 | 369104407 |
| 29 | 939538491 |
| 30 | 1610637415 |
| 31 | 2147516555 |