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 | 3 |
| 2 | 6 |
| 3 | 12 |
| 4 | 21 |
| 5 | 33 |
| 6 | 51 |
| 7 | 75 |
| 8 | 105 |
| 9 | 145 |
| 10 | 195 |
| 11 | 255 |
| 12 | 330 |
| 13 | 420 |
| 14 | 525 |
| 15 | 651 |
| 16 | 798 |
| 17 | 966 |
| 18 | 1162 |
| 19 | 1386 |
| 20 | 1638 |
| 21 | 1926 |
| 22 | 2250 |
| 23 | 2610 |
| 24 | 3015 |
| 25 | 3465 |
| 26 | 3960 |
| 27 | 4510 |
| 28 | 5115 |
| 29 | 5775 |
| 30 | 6501 |
| 31 | 7293 |
| 32 | 8151 |
| 33 | 9087 |
| 34 | 10101 |
| 35 | 11193 |
| 36 | 12376 |
| 37 | 13650 |