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 | 23 |
| 3 | 39 |
| 4 | 63 |
| 5 | 95 |
| 6 | 135 |
| 7 | 183 |
| 8 | 239 |
| 9 | 303 |
| 10 | 375 |
| 11 | 455 |
| 12 | 543 |
| 13 | 639 |
| 14 | 743 |
| 15 | 855 |
| 16 | 975 |
| 17 | 1103 |
| 18 | 1239 |
| 19 | 1383 |
| 20 | 1535 |
| 21 | 1695 |
| 22 | 1863 |
| 23 | 2039 |
| 24 | 2223 |
| 25 | 2415 |
| 26 | 2615 |
| 27 | 2823 |
| 28 | 3039 |
| 29 | 3263 |
| 30 | 3495 |
| 31 | 3735 |
| 32 | 3983 |
| 33 | 4239 |
| 34 | 4503 |
| 35 | 4775 |
| 36 | 5055 |
| 37 | 5343 |
| 38 | 5639 |
| 39 | 5943 |
| 40 | 6255 |
| 41 | 6575 |
| 42 | 6903 |
| 43 | 7239 |
| 44 | 7583 |
| 45 | 7935 |
| 46 | 8295 |
| 47 | 8663 |
| 48 | 9039 |
| 49 | 9423 |
| 50 | 9815 |