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) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 11 |
| 3 | 53 |
| 4 | 173 |
| 5 | 448 |
| 6 | 994 |
| 7 | 1974 |
| 8 | 3606 |
| 9 | 6171 |
| 10 | 10021 |
| 11 | 15587 |
| 12 | 23387 |
| 13 | 34034 |
| 14 | 48244 |
| 15 | 66844 |
| 16 | 90780 |
| 17 | 121125 |
| 18 | 159087 |
| 19 | 206017 |
| 20 | 263417 |
| 21 | 332948 |
| 22 | 416438 |
| 23 | 515890 |
| 24 | 633490 |
| 25 | 771615 |
| 26 | 932841 |
| 27 | 1119951 |
| 28 | 1335943 |
| 29 | 1584038 |
| 30 | 1867688 |