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 | 210 |
| 2 | 1155 |
| 3 | 5005 |
| 4 | 17017 |
| 5 | 46189 |
| 6 | 96577 |
| 7 | 215441 |
| 8 | 392863 |
| 9 | 765049 |
| 10 | 1363783 |
| 11 | 2022161 |
| 12 | 3065857 |
| 13 | 4391633 |
| 14 | 6319667 |
| 15 | 8965109 |
| 16 | 12780049 |
| 17 | 17120443 |
| 18 | 21182921 |
| 19 | 27433619 |
| 20 | 33984931 |
| 21 | 42600829 |
| 22 | 56606581 |
| 23 | 72370439 |
| 24 | 89809099 |
| 25 | 107972737 |
| 26 | 121330189 |