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 | 6 |
| 3 | 14 |
| 4 | 36 |
| 5 | 76 |
| 6 | 160 |
| 7 | 276 |
| 8 | 478 |
| 9 | 756 |
| 10 | 1164 |
| 11 | 1660 |
| 12 | 2374 |
| 13 | 3244 |
| 14 | 4430 |
| 15 | 5800 |
| 16 | 7490 |
| 17 | 9468 |
| 18 | 11982 |
| 19 | 14792 |
| 20 | 18276 |
| 21 | 22216 |
| 22 | 26816 |
| 23 | 31848 |
| 24 | 37862 |
| 25 | 44500 |
| 26 | 52214 |
| 27 | 60544 |
| 28 | 70012 |
| 29 | 80348 |
| 30 | 92264 |
| 31 | 105004 |
| 32 | 119558 |
| 33 | 135328 |
| 34 | 152774 |
| 35 | 171276 |
| 36 | 191722 |
| 37 | 213548 |
| 38 | 237954 |
| 39 | 263680 |
| 40 | 291710 |