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 | 1 |
| 2 | 3 |
| 3 | 21 |
| 4 | 57 |
| 5 | 219 |
| 6 | 399 |
| 7 | 903 |
| 8 | 1533 |
| 9 | 2667 |
| 10 | 4161 |
| 11 | 7077 |
| 12 | 17157 |
| 13 | 18543 |
| 14 | 29127 |
| 15 | 32547 |
| 16 | 50673 |
| 17 | 65919 |
| 18 | 74109 |
| 19 | 96141 |
| 20 | 113799 |
| 21 | 114681 |
| 22 | 134463 |
| 23 | 194691 |
| 24 | 227829 |
| 25 | 304311 |
| 26 | 352317 |
| 27 | 383907 |
| 28 | 389193 |
| 29 | 463071 |
| 30 | 516621 |
| 31 | 672987 |
| 32 | 797349 |
| 33 | 863517 |
| 34 | 898779 |
| 35 | 932799 |
| 36 | 1252461 |
| 37 | 1353639 |