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 | 8 |
| 3 | 50 |
| 4 | 57 |
| 5 | 344 |
| 6 | 400 |
| 7 | 2402 |
| 8 | 2451 |
| 9 | 2801 |
| 10 | 16808 |
| 11 | 19608 |
| 12 | 117650 |
| 13 | 117993 |
| 14 | 120100 |
| 15 | 137257 |
| 16 | 823544 |
| 17 | 960800 |
| 18 | 5764802 |
| 19 | 5767203 |
| 20 | 5884901 |
| 21 | 6725601 |
| 22 | 40353608 |
| 23 | 40471600 |
| 24 | 47079208 |
| 25 | 282475250 |
| 26 | 282492057 |
| 27 | 288360150 |
| 28 | 329554457 |
| 29 | 1977326744 |
| 30 | 2306881200 |
| 31 | 13841287202 |