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 | 21 |
| 2 | 91 |
| 3 | 209 |
| 4 | 589 |
| 5 | 851 |
| 6 | 2881 |
| 7 | 7739 |
| 8 | 10541 |
| 9 | 16171 |
| 10 | 26069 |
| 11 | 29329 |
| 12 | 75151 |
| 13 | 95129 |
| 14 | 110839 |
| 15 | 165169 |
| 16 | 194219 |
| 17 | 216409 |
| 18 | 220991 |
| 19 | 264389 |
| 20 | 374749 |
| 21 | 411601 |
| 22 | 653069 |
| 23 | 717949 |
| 24 | 829931 |
| 25 | 1108969 |
| 26 | 1119311 |
| 27 | 1171741 |
| 28 | 1269139 |
| 29 | 1416689 |
| 30 | 2059789 |
| 31 | 3161729 |
| 32 | 3374249 |
| 33 | 3428459 |
| 34 | 4924109 |