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 | 611 |
| 2 | 2293 |
| 3 | 7349 |
| 4 | 20247 |
| 5 | 54611 |
| 6 | 136304 |
| 7 | 327679 |
| 8 | 763588 |
| 9 | 1721033 |
| 10 | 3799888 |
| 11 | 8211737 |
| 12 | 17438746 |
| 13 | 36502015 |
| 14 | 75371771 |
| 15 | 153887886 |
| 16 | 310995366 |
| 17 | 622783262 |
| 18 | 1237165150 |
| 19 | 2439654168 |
| 20 | 4779420957 |
| 21 | 9307434062 |
| 22 | 18026860476 |
| 23 | 34742343252 |
| 24 | 66653403132 |