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 | -7 |
| 1 | -25 |
| 2 | -59 |
| 3 | -161 |
| 4 | -415 |
| 5 | -1093 |
| 6 | -2855 |
| 7 | -7481 |
| 8 | -19579 |
| 9 | -51265 |
| 10 | -134207 |
| 11 | -351365 |
| 12 | -919879 |
| 13 | -2408281 |
| 14 | -6304955 |
| 15 | -16506593 |
| 16 | -43214815 |
| 17 | -113137861 |
| 18 | -296198759 |
| 19 | -775458425 |
| 20 | -2030176507 |
| 21 | -5315071105 |
| 22 | -13915036799 |
| 23 | -36430039301 |
| 24 | -95375081095 |
| 25 | -249695203993 |