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 | 157 |
| 2 | 257 |
| 3 | 457 |
| 4 | 557 |
| 5 | 757 |
| 6 | 857 |
| 7 | 1657 |
| 8 | 2357 |
| 9 | 2557 |
| 10 | 2657 |
| 11 | 2857 |
| 12 | 2957 |
| 13 | 3257 |
| 14 | 3457 |
| 15 | 3557 |
| 16 | 4057 |
| 17 | 4157 |
| 18 | 4357 |
| 19 | 4457 |
| 20 | 4657 |
| 21 | 4957 |
| 22 | 5557 |
| 23 | 5657 |
| 24 | 5857 |
| 25 | 6257 |
| 26 | 6857 |
| 27 | 7057 |
| 28 | 7457 |
| 29 | 7757 |
| 30 | 9157 |
| 31 | 9257 |
| 32 | 9857 |
| 33 | 10357 |
| 34 | 10457 |
| 35 | 10657 |
| 36 | 10957 |
| 37 | 11057 |
| 38 | 11257 |
| 39 | 11657 |
| 40 | 12157 |
| 41 | 12457 |
| 42 | 12757 |