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 | 4 |
| 2 | 114 |
| 3 | 646 |
| 4 | 2146 |
| 5 | 5390 |
| 6 | 11384 |
| 7 | 21364 |
| 8 | 36796 |
| 9 | 59376 |
| 10 | 91030 |
| 11 | 133914 |
| 12 | 190414 |
| 13 | 263146 |
| 14 | 354956 |
| 15 | 468920 |
| 16 | 608344 |
| 17 | 776764 |
| 18 | 977946 |
| 19 | 1215886 |
| 20 | 1494810 |
| 21 | 1819174 |
| 22 | 2193664 |
| 23 | 2623196 |
| 24 | 3112916 |
| 25 | 3668200 |
| 26 | 4294654 |
| 27 | 4998114 |
| 28 | 5784646 |
| 29 | 6660546 |
| 30 | 7632340 |
| 31 | 8706784 |