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 | 6 |
| 2 | 13 |
| 3 | 32 |
| 4 | 77 |
| 5 | 186 |
| 6 | 449 |
| 7 | 1084 |
| 8 | 2617 |
| 9 | 6318 |
| 10 | 15253 |
| 11 | 36824 |
| 12 | 88901 |
| 13 | 214626 |
| 14 | 518153 |
| 15 | 1250932 |
| 16 | 3020017 |
| 17 | 7290966 |
| 18 | 17601949 |
| 19 | 42494864 |
| 20 | 102591677 |
| 21 | 247678218 |
| 22 | 597948113 |
| 23 | 1443574444 |
| 24 | 3485097001 |
| 25 | 8413768446 |