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 | 15 |
| 2 | 126 |
| 3 | 429 |
| 4 | 1020 |
| 5 | 1995 |
| 6 | 3450 |
| 7 | 5481 |
| 8 | 8184 |
| 9 | 11655 |
| 10 | 15990 |
| 11 | 21285 |
| 12 | 27636 |
| 13 | 35139 |
| 14 | 43890 |
| 15 | 53985 |
| 16 | 65520 |
| 17 | 78591 |
| 18 | 93294 |
| 19 | 109725 |
| 20 | 127980 |
| 21 | 148155 |
| 22 | 170346 |
| 23 | 194649 |
| 24 | 221160 |
| 25 | 249975 |
| 26 | 281190 |
| 27 | 314901 |
| 28 | 351204 |
| 29 | 390195 |
| 30 | 431970 |
| 31 | 476625 |
| 32 | 524256 |
| 33 | 574959 |
| 34 | 628830 |
| 35 | 685965 |
| 36 | 746460 |