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 | 29 |
| 3 | 47 |
| 4 | 61 |
| 5 | 79 |
| 6 | 151 |
| 7 | 349 |
| 8 | 389 |
| 9 | 461 |
| 10 | 601 |
| 11 | 1051 |
| 12 | 1249 |
| 13 | 1429 |
| 14 | 1451 |
| 15 | 1789 |
| 16 | 2239 |
| 17 | 3499 |
| 18 | 4799 |
| 19 | 5011 |
| 20 | 5101 |
| 21 | 5501 |
| 22 | 5749 |
| 23 | 10501 |
| 24 | 11149 |
| 25 | 14249 |
| 26 | 50101 |
| 27 | 51001 |
| 28 | 55001 |
| 29 | 100501 |
| 30 | 100649 |
| 31 | 101149 |
| 32 | 150001 |
| 33 | 318751 |
| 34 | 448999 |
| 35 | 501001 |
| 36 | 1009951 |
| 37 | 5000011 |
| 38 | 5000101 |
| 39 | 5001001 |
| 40 | 50000101 |