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 | 4 |
| 3 | 18 |
| 4 | 50 |
| 5 | 294 |
| 6 | 450 |
| 7 | 578 |
| 8 | 1014 |
| 9 | 1210 |
| 10 | 2166 |
| 11 | 5202 |
| 12 | 7350 |
| 13 | 8214 |
| 14 | 10890 |
| 15 | 14450 |
| 16 | 16810 |
| 17 | 25350 |
| 18 | 28830 |
| 19 | 31974 |
| 20 | 35322 |
| 21 | 49686 |
| 22 | 54150 |
| 23 | 56454 |
| 24 | 58190 |
| 25 | 71286 |
| 26 | 77658 |
| 27 | 84966 |
| 28 | 102010 |
| 29 | 106134 |
| 30 | 111630 |
| 31 | 130050 |
| 32 | 132098 |
| 33 | 151290 |
| 34 | 159414 |
| 35 | 177870 |
| 36 | 205350 |
| 37 | 219102 |
| 38 | 223494 |
| 39 | 293046 |
| 40 | 349690 |
| 41 | 366054 |
| 42 | 402486 |
| 43 | 486798 |
| 44 | 523710 |
| 45 | 536298 |
| 46 | 613470 |