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 | 3 |
| 2 | 6 |
| 3 | 15 |
| 4 | 28 |
| 5 | 91 |
| 6 | 153 |
| 7 | 190 |
| 8 | 496 |
| 9 | 1891 |
| 10 | 4005 |
| 11 | 5778 |
| 12 | 8128 |
| 13 | 135981 |
| 14 | 184528 |
| 15 | 818560 |
| 16 | 2427706 |
| 17 | 2602621 |
| 18 | 5176153 |
| 19 | 9046131 |
| 20 | 9783676 |
| 21 | 46943205 |
| 22 | 49416711 |
| 23 | 62871291 |
| 24 | 198751953 |
| 25 | 235477551 |
| 26 | 269340445 |
| 27 | 990013753 |
| 28 | 3718970646 |
| 29 | 6105511756 |
| 30 | 8718535225 |
| 31 | 23347768186 |
| 32 | 286403014380 |