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 | 15 |
| 2 | 28 |
| 3 | 88 |
| 4 | 245 |
| 5 | 396 |
| 6 | 979 |
| 7 | 1505 |
| 8 | 3421 |
| 9 | 44567 |
| 10 | 62377 |
| 11 | 225638 |
| 12 | 307077 |
| 13 | 415910 |
| 14 | 1006279 |
| 15 | 4059132 |
| 16 | 6924325 |
| 17 | 66615465 |
| 18 | 107240563 |
| 19 | 135624475 |
| 20 | 270973120 |
| 21 | 425688314 |
| 22 | 663855038 |
| 23 | 1581563676 |
| 24 | 2417635935 |
| 25 | 2982269752 |
| 26 | 3673314756 |
| 27 | 4517918038 |
| 28 | 5548822508 |
| 29 | 8335344604 |
| 30 | 15194335989 |