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 | 47 |
| 2 | 191 |
| 3 | 431 |
| 4 | 767 |
| 5 | 1199 |
| 6 | 1727 |
| 7 | 2351 |
| 8 | 3071 |
| 9 | 3887 |
| 10 | 4799 |
| 11 | 5807 |
| 12 | 6911 |
| 13 | 8111 |
| 14 | 9407 |
| 15 | 10799 |
| 16 | 12287 |
| 17 | 13871 |
| 18 | 15551 |
| 19 | 17327 |
| 20 | 19199 |
| 21 | 21167 |
| 22 | 23231 |
| 23 | 25391 |
| 24 | 27647 |
| 25 | 29999 |
| 26 | 32447 |
| 27 | 34991 |
| 28 | 37631 |
| 29 | 40367 |
| 30 | 43199 |
| 31 | 46127 |
| 32 | 49151 |
| 33 | 52271 |
| 34 | 55487 |
| 35 | 58799 |
| 36 | 62207 |
| 37 | 65711 |
| 38 | 69311 |
| 39 | 73007 |
| 40 | 76799 |