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 | 14 |
| 2 | 31 |
| 3 | 189 |
| 4 | 1017 |
| 5 | 5909 |
| 6 | 33461 |
| 7 | 191289 |
| 8 | 1089941 |
| 9 | 6217661 |
| 10 | 35454545 |
| 11 | 202199549 |
| 12 | 1153097557 |
| 13 | 6575970385 |
| 14 | 37501690413 |
| 15 | 213866533133 |
| 16 | 1219647879417 |
| 17 | 6955465873669 |
| 18 | 39665957261253 |
| 19 | 226208890949593 |
| 20 | 1290034710761669 |