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) |
|---|---|
| 10 | 10061 |
| 11 | 37702 |
| 12 | 107175 |
| 13 | 285492 |
| 14 | 786489 |
| 15 | 2249024 |
| 16 | 6929078 |
| 17 | 22322520 |
| 18 | 77416352 |
| 19 | 274792342 |
| 20 | 1035050705 |
| 21 | 2962838350 |
| 22 | 7926847142 |
| 23 | 20648853479 |
| 24 | 54254560137 |
| 25 | 143941539439 |
| 26 | 393399319076 |
| 27 | 1083862520072 |
| 28 | 3084318416024 |
| 29 | 8650938117110 |
| 30 | 24829005575685 |
| 31 | 65609605382112 |