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 | 0 |
| 2 | 129 |
| 3 | 381 |
| 4 | 501 |
| 5 | 639 |
| 6 | 963 |
| 7 | 1161 |
| 8 | 1371 |
| 9 | 1593 |
| 10 | 1851 |
| 11 | 2127 |
| 12 | 2427 |
| 13 | 3087 |
| 14 | 3447 |
| 15 | 3831 |
| 16 | 4227 |
| 17 | 5589 |
| 18 | 6081 |
| 19 | 6870 |
| 20 | 10191 |
| 21 | 10887 |
| 22 | 12339 |
| 23 | 13101 |
| 24 | 13887 |
| 25 | 14697 |
| 26 | 15537 |
| 27 | 16401 |
| 28 | 17283 |
| 29 | 18189 |
| 30 | 19113 |
| 31 | 22548 |
| 32 | 23592 |
| 33 | 25800 |
| 34 | 26940 |
| 35 | 28104 |
| 36 | 30504 |
| 37 | 31734 |
| 38 | 35568 |
| 39 | 36888 |
| 40 | 38238 |
| 41 | 39612 |
| 42 | 41022 |
| 43 | 42468 |
| 44 | 46191 |