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) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 4 |
| 5 | 5 |
| 6 | 6 |
| 7 | 7 |
| 8 | 8 |
| 9 | 9 |
| 10 | 55 |
| 11 | 191 |
| 12 | 66 |
| 13 | 292 |
| 14 | 77 |
| 15 | 393 |
| 16 | 88 |
| 17 | 494 |
| 18 | 99 |
| 19 | 595 |
| 20 | 686 |
| 21 | 696 |
| 22 | 787 |
| 23 | 797 |
| 24 | 888 |
| 25 | 898 |
| 26 | 989 |
| 27 | 999 |
| 28 | 5995 |
| 29 | 19991 |
| 30 | 6996 |
| 31 | 29992 |
| 32 | 7997 |
| 33 | 39993 |
| 34 | 8998 |
| 35 | 49994 |
| 36 | 9999 |
| 37 | 59995 |
| 38 | 69896 |
| 39 | 69996 |
| 40 | 79897 |
| 41 | 79997 |
| 42 | 89898 |
| 43 | 89998 |
| 44 | 99899 |
| 45 | 99999 |
| 46 | 599995 |
| 47 | 1999991 |