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 | 10 |
| 2 | 20 |
| 3 | 30 |
| 4 | 40 |
| 5 | 46 |
| 6 | 68 |
| 7 | 93 |
| 8 | 95 |
| 9 | 129 |
| 10 | 176 |
| 11 | 229 |
| 12 | 700 |
| 13 | 1757 |
| 14 | 1958 |
| 15 | 7931 |
| 16 | 57356 |
| 17 | 269518 |
| 18 | 411658 |
| 19 | 675531 |
| 20 | 749254 |
| 21 | 4400728 |
| 22 | 18894561 |
| 23 | 33250486 |
| 24 | 58903708 |
| 25 | 297751737 |
| 26 | 325226398 |
| 27 | 781717865 |
| 28 | 18504580518 |
| 29 | 27893737353 |
| 30 | 103233492954 |