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 | 47 |
| 3 | 67 |
| 4 | 79 |
| 5 | 97 |
| 6 | 449 |
| 7 | 467 |
| 8 | 479 |
| 9 | 499 |
| 10 | 647 |
| 11 | 677 |
| 12 | 769 |
| 13 | 797 |
| 14 | 947 |
| 15 | 967 |
| 16 | 977 |
| 17 | 997 |
| 18 | 4447 |
| 19 | 4649 |
| 20 | 4679 |
| 21 | 4799 |
| 22 | 4967 |
| 23 | 4969 |
| 24 | 4999 |
| 25 | 6449 |
| 26 | 6469 |
| 27 | 6679 |
| 28 | 6779 |
| 29 | 6947 |
| 30 | 6949 |
| 31 | 6967 |
| 32 | 6977 |
| 33 | 6997 |
| 34 | 7477 |
| 35 | 7499 |
| 36 | 7649 |
| 37 | 7669 |
| 38 | 7699 |
| 39 | 7949 |
| 40 | 9467 |
| 41 | 9479 |
| 42 | 9497 |
| 43 | 9649 |
| 44 | 9677 |
| 45 | 9679 |
| 46 | 9697 |
| 47 | 9749 |
| 48 | 9767 |