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) |
|---|---|
| 0 | 21 |
| 1 | 165 |
| 2 | 437 |
| 3 | 837 |
| 4 | 1365 |
| 5 | 2021 |
| 6 | 2805 |
| 7 | 3717 |
| 8 | 4757 |
| 9 | 5925 |
| 10 | 7221 |
| 11 | 8645 |
| 12 | 10197 |
| 13 | 11877 |
| 14 | 13685 |
| 15 | 15621 |
| 16 | 17685 |
| 17 | 19877 |
| 18 | 22197 |
| 19 | 24645 |
| 20 | 27221 |
| 21 | 29925 |
| 22 | 32757 |
| 23 | 35717 |
| 24 | 38805 |
| 25 | 42021 |
| 26 | 45365 |
| 27 | 48837 |
| 28 | 52437 |
| 29 | 56165 |
| 30 | 60021 |
| 31 | 64005 |
| 32 | 68117 |
| 33 | 72357 |
| 34 | 76725 |
| 35 | 81221 |