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 | 3 |
| 3 | 2 |
| 4 | 13 |
| 5 | 16 |
| 6 | 106 |
| 7 | 166 |
| 8 | 1073 |
| 9 | 1934 |
| 10 | 12142 |
| 11 | 24076 |
| 12 | 147090 |
| 13 | 312906 |
| 14 | 1865772 |
| 15 | 4191822 |
| 16 | 24463905 |
| 17 | 57433950 |
| 18 | 328887346 |
| 19 | 800740450 |
| 20 | 4508608610 |
| 21 | 11319707546 |
| 22 | 62781858592 |
| 23 | 161841539812 |
| 24 | 885513974674 |
| 25 | 2335765140994 |
| 26 | 12624162072740 |
| 27 | 33979681977530 |
| 28 | 181611275997040 |