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 | 1 |
| 2 | 1 |
| 3 | 9 |
| 4 | 14 |
| 5 | 46 |
| 6 | 81 |
| 7 | 209 |
| 8 | 389 |
| 9 | 901 |
| 10 | 1726 |
| 11 | 3774 |
| 12 | 7349 |
| 13 | 15541 |
| 14 | 30561 |
| 15 | 63329 |
| 16 | 125294 |
| 17 | 256366 |
| 18 | 509161 |
| 19 | 1033449 |
| 20 | 2057549 |
| 21 | 4154701 |
| 22 | 8284926 |
| 23 | 16673534 |
| 24 | 33282989 |
| 25 | 66837421 |
| 26 | 133507081 |
| 27 | 267724809 |
| 28 | 535010414 |
| 29 | 1071881326 |
| 30 | 2142612801 |
| 31 | 4290096449 |
| 32 | 8577182549 |
| 33 | 17167117141 |
| 34 | 34326353086 |
| 35 | 68686091454 |
| 36 | 137351549669 |
| 37 | 274790503141 |