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) |
|---|---|
| 0 | 1 |
| 1 | 30 |
| 2 | 175 |
| 3 | 588 |
| 4 | 1485 |
| 5 | 3146 |
| 6 | 5915 |
| 7 | 10200 |
| 8 | 16473 |
| 9 | 25270 |
| 10 | 37191 |
| 11 | 52900 |
| 12 | 73125 |
| 13 | 98658 |
| 14 | 130355 |
| 15 | 169136 |
| 16 | 215985 |
| 17 | 271950 |
| 18 | 338143 |
| 19 | 415740 |
| 20 | 505981 |
| 21 | 610170 |
| 22 | 729675 |
| 23 | 865928 |
| 24 | 1020425 |
| 25 | 1194726 |
| 26 | 1390455 |
| 27 | 1609300 |
| 28 | 1853013 |
| 29 | 2123410 |
| 30 | 2422371 |
| 31 | 2751840 |