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 | 20 |
| 2 | 156 |
| 3 | 255 |
| 4 | 600 |
| 5 | 609 |
| 6 | 1295 |
| 7 | 1640 |
| 8 | 2385 |
| 9 | 3640 |
| 10 | 3660 |
| 11 | 4015 |
| 12 | 4095 |
| 13 | 6545 |
| 14 | 6984 |
| 15 | 7120 |
| 16 | 7140 |
| 17 | 9919 |
| 18 | 9999 |
| 19 | 12656 |
| 20 | 14385 |
| 21 | 14625 |
| 22 | 20280 |
| 23 | 20724 |
| 24 | 20735 |
| 25 | 20860 |
| 26 | 20880 |
| 27 | 28305 |
| 28 | 28545 |
| 29 | 31980 |
| 30 | 32424 |
| 31 | 32560 |
| 32 | 32580 |
| 33 | 37791 |
| 34 | 38335 |
| 35 | 38415 |
| 36 | 48464 |
| 37 | 48620 |
| 38 | 50369 |