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 | 3 |
| 2 | 18 |
| 3 | 51 |
| 4 | 108 |
| 5 | 195 |
| 6 | 318 |
| 7 | 483 |
| 8 | 696 |
| 9 | 963 |
| 10 | 1290 |
| 11 | 1683 |
| 12 | 2148 |
| 13 | 2691 |
| 14 | 3318 |
| 15 | 4035 |
| 16 | 4848 |
| 17 | 5763 |
| 18 | 6786 |
| 19 | 7923 |
| 20 | 9180 |
| 21 | 10563 |
| 22 | 12078 |
| 23 | 13731 |
| 24 | 15528 |
| 25 | 17475 |
| 26 | 19578 |
| 27 | 21843 |
| 28 | 24276 |
| 29 | 26883 |
| 30 | 29670 |
| 31 | 32643 |
| 32 | 35808 |
| 33 | 39171 |
| 34 | 42738 |
| 35 | 46515 |
| 36 | 50508 |
| 37 | 54723 |
| 38 | 59166 |
| 39 | 63843 |
| 40 | 68760 |
| 41 | 73923 |
| 42 | 79338 |