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 | 121 |
| 2 | 1111 |
| 3 | 1331 |
| 4 | 1441 |
| 5 | 1661 |
| 6 | 1991 |
| 7 | 3443 |
| 8 | 3883 |
| 9 | 7997 |
| 10 | 10201 |
| 11 | 12221 |
| 12 | 13231 |
| 13 | 14641 |
| 14 | 15251 |
| 15 | 15851 |
| 16 | 18281 |
| 17 | 19291 |
| 18 | 31613 |
| 19 | 35653 |
| 20 | 37673 |
| 21 | 37873 |
| 22 | 38683 |
| 23 | 112211 |
| 24 | 113311 |
| 25 | 115511 |
| 26 | 116611 |
| 27 | 124421 |
| 28 | 125521 |
| 29 | 134431 |
| 30 | 136631 |
| 31 | 139931 |
| 32 | 145541 |
| 33 | 146641 |
| 34 | 157751 |
| 35 | 167761 |
| 36 | 169961 |
| 37 | 176671 |