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 | 15 |
| 3 | 91 |
| 4 | 153 |
| 5 | 435 |
| 6 | 703 |
| 7 | 861 |
| 8 | 1431 |
| 9 | 1891 |
| 10 | 2701 |
| 11 | 4005 |
| 12 | 4753 |
| 13 | 5151 |
| 14 | 5995 |
| 15 | 6441 |
| 16 | 9453 |
| 17 | 11175 |
| 18 | 12403 |
| 19 | 15051 |
| 20 | 16471 |
| 21 | 18721 |
| 22 | 19503 |
| 23 | 26335 |
| 24 | 27261 |
| 25 | 29161 |
| 26 | 33153 |
| 27 | 36315 |
| 28 | 38503 |
| 29 | 39621 |
| 30 | 43071 |
| 31 | 49141 |
| 32 | 50403 |
| 33 | 56953 |
| 34 | 61075 |
| 35 | 62481 |
| 36 | 69751 |
| 37 | 75855 |
| 38 | 79003 |