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 | 1 |
| 1 | -22 |
| 2 | -115 |
| 3 | -350 |
| 4 | -940 |
| 5 | -2124 |
| 6 | -4615 |
| 7 | -9130 |
| 8 | -17575 |
| 9 | -32100 |
| 10 | -57239 |
| 11 | -98512 |
| 12 | -166595 |
| 13 | -274350 |
| 14 | -445055 |
| 15 | -708124 |
| 16 | -1112002 |
| 17 | -1719410 |
| 18 | -2629450 |
| 19 | -3970230 |
| 20 | -5937238 |
| 21 | -8785502 |
| 22 | -12889630 |
| 23 | -18741250 |
| 24 | -27045445 |
| 25 | -38724088 |
| 26 | -55074057 |
| 27 | -77791320 |
| 28 | -109215025 |