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 | 2 |
| 3 | 3 |
| 4 | 7 |
| 5 | 9 |
| 6 | 13 |
| 7 | 19 |
| 8 | 24 |
| 9 | 39 |
| 10 | 63 |
| 11 | 87 |
| 12 | 124 |
| 13 | 183 |
| 14 | 272 |
| 15 | 405 |
| 16 | 593 |
| 17 | 867 |
| 18 | 1261 |
| 19 | 1869 |
| 20 | 2760 |
| 21 | 4046 |
| 22 | 5936 |
| 23 | 8712 |
| 24 | 12817 |
| 25 | 18861 |
| 26 | 27720 |
| 27 | 40711 |
| 28 | 59792 |
| 29 | 87915 |
| 30 | 129250 |
| 31 | 189946 |
| 32 | 279118 |
| 33 | 410135 |
| 34 | 602803 |
| 35 | 886008 |
| 36 | 1302157 |
| 37 | 1913622 |
| 38 | 2812220 |
| 39 | 4133091 |
| 40 | 6074385 |
| 41 | 8927330 |
| 42 | 13119959 |