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 | 2 |
| 2 | 3 |
| 3 | 5 |
| 4 | 9 |
| 5 | 18 |
| 6 | 39 |
| 7 | 153 |
| 8 | 222 |
| 9 | 378 |
| 10 | 630 |
| 11 | 1685 |
| 12 | 1749 |
| 13 | 3003 |
| 14 | 8178 |
| 15 | 10422 |
| 16 | 41310 |
| 17 | 70338 |
| 18 | 103833 |
| 19 | 141669 |
| 20 | 151590 |
| 21 | 285390 |
| 22 | 385578 |
| 23 | 542793 |
| 24 | 578589 |
| 25 | 804870 |
| 26 | 816750 |
| 27 | 950418 |
| 28 | 1105893 |
| 29 | 1132830 |
| 30 | 1583778 |
| 31 | 1585710 |
| 32 | 1972809 |
| 33 | 2578719 |
| 34 | 2642430 |
| 35 | 3248583 |
| 36 | 3628089 |
| 37 | 5875230 |
| 38 | 6116253 |
| 39 | 6152495 |
| 40 | 6469470 |
| 41 | 8550738 |
| 42 | 9231834 |