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 | 15 |
| 1 | 105 |
| 2 | 396 |
| 3 | 1110 |
| 4 | 2600 |
| 5 | 5390 |
| 6 | 10220 |
| 7 | 18096 |
| 8 | 30345 |
| 9 | 48675 |
| 10 | 75240 |
| 11 | 112710 |
| 12 | 164346 |
| 13 | 234080 |
| 14 | 326600 |
| 15 | 447440 |
| 16 | 603075 |
| 17 | 801021 |
| 18 | 1049940 |
| 19 | 1359750 |
| 20 | 1741740 |
| 21 | 2208690 |
| 22 | 2774996 |
| 23 | 3456800 |
| 24 | 4272125 |
| 25 | 5241015 |
| 26 | 6385680 |
| 27 | 7730646 |
| 28 | 9302910 |
| 29 | 11132100 |