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 | 3 |
| 2 | 4 |
| 3 | 5 |
| 4 | 133 |
| 5 | 169 |
| 6 | 1117 |
| 7 | 2406 |
| 8 | 3564 |
| 9 | 6141 |
| 10 | 7429 |
| 11 | 8220 |
| 12 | 8475 |
| 13 | 14193 |
| 14 | 33543 |
| 15 | 121049 |
| 16 | 211785 |
| 17 | 877650 |
| 18 | 5948070 |
| 19 | 8494543 |
| 20 | 27820975 |
| 21 | 41428418 |
| 22 | 130490020 |
| 23 | 139053727 |
| 24 | 200325407 |
| 25 | 291720414 |
| 26 | 893706168 |
| 27 | 977748014 |
| 28 | 2103851425 |
| 29 | 2173904606 |
| 30 | 5996888467 |
| 31 | 15790305181 |