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 | 1 |
| 2 | 1 |
| 3 | 13 |
| 4 | 43 |
| 5 | 97 |
| 6 | 181 |
| 7 | 301 |
| 8 | 463 |
| 9 | 673 |
| 10 | 937 |
| 11 | 1261 |
| 12 | 1651 |
| 13 | 2113 |
| 14 | 2653 |
| 15 | 3277 |
| 16 | 3991 |
| 17 | 4801 |
| 18 | 5713 |
| 19 | 6733 |
| 20 | 7867 |
| 21 | 9121 |
| 22 | 10501 |
| 23 | 12013 |
| 24 | 13663 |
| 25 | 15457 |
| 26 | 17401 |
| 27 | 19501 |
| 28 | 21763 |
| 29 | 24193 |
| 30 | 26797 |
| 31 | 29581 |
| 32 | 32551 |
| 33 | 35713 |
| 34 | 39073 |
| 35 | 42637 |
| 36 | 46411 |
| 37 | 50401 |
| 38 | 54613 |
| 39 | 59053 |
| 40 | 63727 |