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 | 5 |
| 3 | 17 |
| 4 | 47 |
| 5 | 105 |
| 6 | 215 |
| 7 | 381 |
| 8 | 649 |
| 9 | 1029 |
| 10 | 1563 |
| 11 | 2257 |
| 12 | 3209 |
| 13 | 4385 |
| 14 | 5925 |
| 15 | 7793 |
| 16 | 10053 |
| 17 | 12745 |
| 18 | 16061 |
| 19 | 19881 |
| 20 | 24487 |
| 21 | 29749 |
| 22 | 35799 |
| 23 | 42649 |
| 24 | 50649 |
| 25 | 59545 |
| 26 | 69701 |
| 27 | 80993 |
| 28 | 93655 |
| 29 | 107597 |
| 30 | 123375 |
| 31 | 140489 |
| 32 | 159705 |
| 33 | 180697 |
| 34 | 203685 |
| 35 | 228625 |
| 36 | 255893 |
| 37 | 285153 |
| 38 | 317401 |
| 39 | 352097 |
| 40 | 389577 |