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 | 30 |
| 2 | 90 |
| 3 | 140 |
| 4 | 270 |
| 5 | 360 |
| 6 | 330 |
| 7 | 660 |
| 8 | 810 |
| 9 | 570 |
| 10 | 1020 |
| 11 | 1260 |
| 12 | 1100 |
| 13 | 1560 |
| 14 | 1620 |
| 15 | 1452 |
| 16 | 2190 |
| 17 | 2340 |
| 18 | 1710 |
| 19 | 2940 |
| 20 | 3240 |
| 21 | 1920 |
| 22 | 3360 |
| 23 | 3960 |
| 24 | 2970 |
| 25 | 3930 |
| 26 | 4140 |
| 27 | 3920 |
| 28 | 5460 |
| 29 | 4680 |
| 30 | 3360 |
| 31 | 5940 |
| 32 | 6570 |
| 33 | 4620 |
| 34 | 6180 |
| 35 | 7560 |
| 36 | 5130 |
| 37 | 7320 |
| 38 | 7920 |
| 39 | 5280 |
| 40 | 9180 |
| 41 | 8100 |
| 42 | 6600 |
| 43 | 10500 |
| 44 | 9900 |