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 | 7 |
| 2 | 31 |
| 3 | 81 |
| 4 | 171 |
| 5 | 309 |
| 6 | 509 |
| 7 | 779 |
| 8 | 1133 |
| 9 | 1579 |
| 10 | 2131 |
| 11 | 2797 |
| 12 | 3591 |
| 13 | 4521 |
| 14 | 5601 |
| 15 | 6839 |
| 16 | 8249 |
| 17 | 9839 |
| 18 | 11623 |
| 19 | 13609 |
| 20 | 15811 |
| 21 | 18237 |
| 22 | 20901 |
| 23 | 23811 |
| 24 | 26981 |
| 25 | 30419 |
| 26 | 34139 |
| 27 | 38149 |
| 28 | 42463 |
| 29 | 47089 |
| 30 | 52041 |
| 31 | 57327 |
| 32 | 62961 |
| 33 | 68951 |
| 34 | 75311 |
| 35 | 82049 |
| 36 | 89179 |
| 37 | 96709 |
| 38 | 104653 |
| 39 | 113019 |