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 | 123 |
| 2 | 456 |
| 3 | 789 |
| 4 | 101112 |
| 5 | 131415 |
| 6 | 161718 |
| 7 | 192021 |
| 8 | 222324 |
| 9 | 252627 |
| 10 | 282930 |
| 11 | 313233 |
| 12 | 343536 |
| 13 | 373839 |
| 14 | 404142 |
| 15 | 434445 |
| 16 | 464748 |
| 17 | 495051 |
| 18 | 525354 |
| 19 | 555657 |
| 20 | 585960 |
| 21 | 616263 |
| 22 | 646566 |
| 23 | 676869 |
| 24 | 707172 |
| 25 | 737475 |
| 26 | 767778 |
| 27 | 798081 |
| 28 | 828384 |
| 29 | 858687 |
| 30 | 888990 |
| 31 | 919293 |
| 32 | 949596 |
| 33 | 979899 |