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 | 4 |
| 2 | 8 |
| 3 | 24 |
| 4 | 90 |
| 5 | 114 |
| 6 | 524 |
| 7 | 888 |
| 8 | 1130 |
| 9 | 1328 |
| 10 | 9552 |
| 11 | 15684 |
| 12 | 19610 |
| 13 | 31398 |
| 14 | 155922 |
| 15 | 360654 |
| 16 | 370262 |
| 17 | 492114 |
| 18 | 1349534 |
| 19 | 1357202 |
| 20 | 2010734 |
| 21 | 4652354 |
| 22 | 17051708 |
| 23 | 20831324 |
| 24 | 47326694 |
| 25 | 122164748 |
| 26 | 189695660 |
| 27 | 191912784 |
| 28 | 387096134 |
| 29 | 436273010 |
| 30 | 1294268492 |