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 | 13 |
| 3 | 77 |
| 4 | 251 |
| 5 | 619 |
| 6 | 1289 |
| 7 | 2393 |
| 8 | 4087 |
| 9 | 6551 |
| 10 | 9989 |
| 11 | 14629 |
| 12 | 20723 |
| 13 | 28547 |
| 14 | 38401 |
| 15 | 50609 |
| 16 | 65519 |
| 17 | 83503 |
| 18 | 104957 |
| 19 | 130301 |
| 20 | 159979 |
| 21 | 194459 |
| 22 | 234233 |
| 23 | 279817 |
| 24 | 331751 |
| 25 | 390599 |
| 26 | 456949 |
| 27 | 531413 |
| 28 | 614627 |
| 29 | 707251 |
| 30 | 809969 |
| 31 | 923489 |
| 32 | 1048543 |
| 33 | 1185887 |
| 34 | 1336301 |
| 35 | 1500589 |
| 36 | 1679579 |
| 37 | 1874123 |
| 38 | 2085097 |
| 39 | 2313401 |
| 40 | 2559959 |