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 | 77 |
| 2 | 165 |
| 3 | 285 |
| 4 | 437 |
| 5 | 621 |
| 6 | 837 |
| 7 | 1085 |
| 8 | 1365 |
| 9 | 1677 |
| 10 | 2021 |
| 11 | 2397 |
| 12 | 2805 |
| 13 | 3245 |
| 14 | 3717 |
| 15 | 4221 |
| 16 | 4757 |
| 17 | 5325 |
| 18 | 5925 |
| 19 | 6557 |
| 20 | 7221 |
| 21 | 7917 |
| 22 | 8645 |
| 23 | 9405 |
| 24 | 10197 |
| 25 | 11021 |
| 26 | 11877 |
| 27 | 12765 |
| 28 | 13685 |
| 29 | 14637 |
| 30 | 15621 |
| 31 | 16637 |
| 32 | 17685 |
| 33 | 18765 |
| 34 | 19877 |
| 35 | 21021 |
| 36 | 22197 |
| 37 | 23405 |
| 38 | 24645 |
| 39 | 25917 |
| 40 | 27221 |
| 41 | 28557 |
| 42 | 29925 |
| 43 | 31325 |
| 44 | 32757 |
| 45 | 34221 |