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 | 1 |
| 2 | 3 |
| 3 | 6 |
| 4 | 13 |
| 5 | 29 |
| 6 | 70 |
| 7 | 175 |
| 8 | 449 |
| 9 | 1164 |
| 10 | 3035 |
| 11 | 7931 |
| 12 | 20748 |
| 13 | 54301 |
| 14 | 142143 |
| 15 | 372114 |
| 16 | 974185 |
| 17 | 2550425 |
| 18 | 6677074 |
| 19 | 17480779 |
| 20 | 45765245 |
| 21 | 119814936 |
| 22 | 313679543 |
| 23 | 821223671 |
| 24 | 2149991448 |
| 25 | 5628750649 |
| 26 | 14736260475 |
| 27 | 38580030750 |
| 28 | 101003831749 |
| 29 | 264431464469 |
| 30 | 692290561630 |
| 31 | 1812440220391 |
| 32 | 4745030099513 |