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 | 5 |
| 3 | 23 |
| 4 | 53 |
| 5 | 211 |
| 6 | 1847 |
| 7 | 2179 |
| 8 | 3967 |
| 9 | 16033 |
| 10 | 24281 |
| 11 | 38501 |
| 12 | 58831 |
| 13 | 203713 |
| 14 | 206699 |
| 15 | 413353 |
| 16 | 1272749 |
| 17 | 2198981 |
| 18 | 5102953 |
| 19 | 10938023 |
| 20 | 12623189 |
| 21 | 72546283 |
| 22 | 142414669 |
| 23 | 162821917 |
| 24 | 163710121 |
| 25 | 325737821 |
| 26 | 1131241763 |
| 27 | 1791752797 |
| 28 | 3173306951 |
| 29 | 4841337887 |
| 30 | 6021542119 |
| 31 | 6807940367 |
| 32 | 7174208683 |
| 33 | 8835528511 |
| 34 | 11179888193 |
| 35 | 15318488291 |
| 36 | 26329105043 |
| 37 | 31587561361 |
| 38 | 45241670743 |