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 | 7 |
| 3 | 31 |
| 4 | 89 |
| 5 | 199 |
| 6 | 8009 |
| 7 | 11551 |
| 8 | 20129 |
| 9 | 23549 |
| 10 | 38609 |
| 11 | 47501 |
| 12 | 67231 |
| 13 | 96221 |
| 14 | 97001 |
| 15 | 103409 |
| 16 | 111871 |
| 17 | 120473 |
| 18 | 131071 |
| 19 | 143261 |
| 20 | 146681 |
| 21 | 168869 |
| 22 | 174761 |
| 23 | 183091 |
| 24 | 193951 |
| 25 | 196181 |
| 26 | 208279 |
| 27 | 208961 |
| 28 | 219727 |
| 29 | 229769 |
| 30 | 237691 |
| 31 | 238519 |
| 32 | 240641 |
| 33 | 247759 |
| 34 | 270271 |
| 35 | 290249 |
| 36 | 291101 |
| 37 | 293201 |
| 38 | 337039 |
| 39 | 340577 |
| 40 | 352831 |