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 | 0 |
| 1 | 6 |
| 2 | 36 |
| 3 | 90 |
| 4 | 168 |
| 5 | 270 |
| 6 | 396 |
| 7 | 546 |
| 8 | 720 |
| 9 | 918 |
| 10 | 1140 |
| 11 | 1386 |
| 12 | 1656 |
| 13 | 1950 |
| 14 | 2268 |
| 15 | 2610 |
| 16 | 2976 |
| 17 | 3366 |
| 18 | 3780 |
| 19 | 4218 |
| 20 | 4680 |
| 21 | 5166 |
| 22 | 5676 |
| 23 | 6210 |
| 24 | 6768 |
| 25 | 7350 |
| 26 | 7956 |
| 27 | 8586 |
| 28 | 9240 |
| 29 | 9918 |
| 30 | 10620 |
| 31 | 11346 |
| 32 | 12096 |
| 33 | 12870 |
| 34 | 13668 |
| 35 | 14490 |
| 36 | 15336 |
| 37 | 16206 |
| 38 | 17100 |