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 | 3 |
| 2 | 39 |
| 3 | 75 |
| 4 | 147 |
| 5 | 207 |
| 6 | 291 |
| 7 | 411 |
| 8 | 579 |
| 9 | 819 |
| 10 | 927 |
| 11 | 1155 |
| 12 | 1635 |
| 13 | 1851 |
| 14 | 2307 |
| 15 | 2487 |
| 16 | 2583 |
| 17 | 2919 |
| 18 | 3267 |
| 19 | 3699 |
| 20 | 3903 |
| 21 | 4611 |
| 22 | 4971 |
| 23 | 5163 |
| 24 | 5835 |
| 25 | 6531 |
| 26 | 7395 |
| 27 | 7803 |
| 28 | 9219 |
| 29 | 9939 |
| 30 | 10323 |
| 31 | 10839 |
| 32 | 11667 |
| 33 | 13059 |
| 34 | 14787 |
| 35 | 15603 |
| 36 | 15999 |
| 37 | 17895 |
| 38 | 18435 |
| 39 | 19875 |
| 40 | 20295 |
| 41 | 20643 |
| 42 | 21675 |
| 43 | 23331 |
| 44 | 26115 |
| 45 | 29571 |
| 46 | 31203 |
| 47 | 31995 |
| 48 | 33327 |
| 49 | 34383 |
| 50 | 35787 |
| 51 | 36867 |
| 52 | 39747 |
| 53 | 40587 |
| 54 | 41283 |
| 55 | 43347 |