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 | 4 |
| 2 | 6 |
| 3 | 9 |
| 4 | 46 |
| 5 | 49 |
| 6 | 69 |
| 7 | 94 |
| 8 | 446 |
| 9 | 466 |
| 10 | 469 |
| 11 | 649 |
| 12 | 669 |
| 13 | 694 |
| 14 | 699 |
| 15 | 949 |
| 16 | 4449 |
| 17 | 4469 |
| 18 | 4499 |
| 19 | 4666 |
| 20 | 4694 |
| 21 | 4699 |
| 22 | 4946 |
| 23 | 6499 |
| 24 | 6646 |
| 25 | 6649 |
| 26 | 6694 |
| 27 | 6999 |
| 28 | 9446 |
| 29 | 9449 |
| 30 | 9466 |
| 31 | 9469 |
| 32 | 9946 |
| 33 | 9969 |
| 34 | 44494 |
| 35 | 44669 |
| 36 | 44949 |
| 37 | 44966 |
| 38 | 44969 |
| 39 | 44999 |
| 40 | 46469 |
| 41 | 46666 |
| 42 | 46946 |
| 43 | 46969 |
| 44 | 46994 |