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 | 31 |
| 2 | 181 |
| 3 | 331 |
| 4 | 601 |
| 5 | 1051 |
| 6 | 1381 |
| 7 | 3331 |
| 8 | 4951 |
| 9 | 5641 |
| 10 | 5881 |
| 11 | 9151 |
| 12 | 11731 |
| 13 | 12781 |
| 14 | 14251 |
| 15 | 17431 |
| 16 | 17851 |
| 17 | 19141 |
| 18 | 21391 |
| 19 | 31081 |
| 20 | 33931 |
| 21 | 41281 |
| 22 | 43891 |
| 23 | 51481 |
| 24 | 52201 |
| 25 | 61231 |
| 26 | 63601 |
| 27 | 67651 |
| 28 | 70141 |
| 29 | 70981 |
| 30 | 84181 |
| 31 | 92641 |
| 32 | 100501 |
| 33 | 104551 |
| 34 | 107641 |
| 35 | 116101 |
| 36 | 126001 |