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 | 15 |
| 2 | 35 |
| 3 | 51 |
| 4 | 57 |
| 5 | 75 |
| 6 | 115 |
| 7 | 135 |
| 8 | 153 |
| 9 | 175 |
| 10 | 315 |
| 11 | 351 |
| 12 | 355 |
| 13 | 395 |
| 14 | 511 |
| 15 | 513 |
| 16 | 517 |
| 17 | 531 |
| 18 | 535 |
| 19 | 539 |
| 20 | 553 |
| 21 | 575 |
| 22 | 579 |
| 23 | 597 |
| 24 | 715 |
| 25 | 755 |
| 26 | 759 |
| 27 | 795 |
| 28 | 935 |
| 29 | 957 |
| 30 | 975 |
| 31 | 1115 |
| 32 | 1135 |
| 33 | 1157 |
| 34 | 1175 |
| 35 | 1315 |
| 36 | 1351 |
| 37 | 1355 |
| 38 | 1359 |
| 39 | 1395 |
| 40 | 1513 |
| 41 | 1517 |
| 42 | 1535 |
| 43 | 1539 |
| 44 | 1557 |
| 45 | 1575 |
| 46 | 1593 |
| 47 | 1715 |
| 48 | 1751 |
| 49 | 1755 |
| 50 | 1795 |