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 | 15 |
| 2 | 26 |
| 3 | 35 |
| 4 | 143 |
| 5 | 215 |
| 6 | 323 |
| 7 | 511 |
| 8 | 899 |
| 9 | 1727 |
| 10 | 1763 |
| 11 | 2047 |
| 12 | 2186 |
| 13 | 2743 |
| 14 | 3599 |
| 15 | 5183 |
| 16 | 7999 |
| 17 | 10403 |
| 18 | 11663 |
| 19 | 13823 |
| 20 | 19043 |
| 21 | 22499 |
| 22 | 32399 |
| 23 | 36863 |
| 24 | 39203 |
| 25 | 51983 |
| 26 | 54871 |
| 27 | 57599 |
| 28 | 72899 |
| 29 | 79523 |
| 30 | 97343 |
| 31 | 121103 |
| 32 | 157463 |
| 33 | 176399 |
| 34 | 186623 |
| 35 | 213443 |
| 36 | 238327 |
| 37 | 248831 |
| 38 | 272483 |
| 39 | 279935 |
| 40 | 324899 |
| 41 | 359999 |
| 42 | 381923 |