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 | 5 |
| 2 | 17 |
| 3 | 47 |
| 4 | 97 |
| 5 | 359 |
| 6 | 1979 |
| 7 | 2399 |
| 8 | 5669 |
| 9 | 9719 |
| 10 | 12799 |
| 11 | 79379 |
| 12 | 134999 |
| 13 | 143999 |
| 14 | 161999 |
| 15 | 199679 |
| 16 | 671999 |
| 17 | 679999 |
| 18 | 890999 |
| 19 | 967999 |
| 20 | 974999 |
| 21 | 1249999 |
| 22 | 3455999 |
| 23 | 3583999 |
| 24 | 3644999 |
| 25 | 4687499 |
| 26 | 4976639 |
| 27 | 5279999 |
| 28 | 5375999 |
| 29 | 6298559 |
| 30 | 8774999 |
| 31 | 16839899 |
| 32 | 24959999 |
| 33 | 26459999 |
| 34 | 29567999 |
| 35 | 45359999 |
| 36 | 48383999 |
| 37 | 68849999 |