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 | 15 |
| 4 | 25 |
| 5 | 55 |
| 6 | 91 |
| 7 | 137 |
| 8 | 525 |
| 9 | 625 |
| 10 | 925 |
| 11 | 3967 |
| 12 | 5995 |
| 13 | 7625 |
| 14 | 10767 |
| 15 | 25087 |
| 16 | 57225 |
| 17 | 68817 |
| 18 | 565027 |
| 19 | 591415 |
| 20 | 2515825 |
| 21 | 2757625 |
| 22 | 4162019 |
| 23 | 5276309 |
| 24 | 96689255 |
| 25 | 115686005 |
| 26 | 133890625 |
| 27 | 242899421 |
| 28 | 492029715 |
| 29 | 588620625 |
| 30 | 1839399055 |
| 31 | 7786281065 |
| 32 | 11231388063 |
| 33 | 17251448809 |
| 34 | 71050380625 |