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 | 2 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 1 |
| 7 | 1 |
| 8 | 7 |
| 9 | 1 |
| 10 | 1 |
| 11 | 1 |
| 12 | -37 |
| 13 | 1 |
| 14 | 37 |
| 15 | 1 |
| 16 | -211 |
| 17 | 1 |
| 18 | 2311 |
| 19 | 1 |
| 20 | -407389 |
| 21 | 1 |
| 22 | 37153 |
| 23 | 1 |
| 24 | -1181819909 |
| 25 | 1 |
| 26 | 76977929 |
| 27 | 1 |
| 28 | -818946931 |
| 29 | 1 |
| 30 | 277930363757 |
| 31 | 1 |
| 32 | -84802531453217 |
| 33 | 1 |
| 34 | 90219075042851 |
| 35 | 1 |
| 36 | -711223555487930419 |
| 37 | 1 |
| 38 | 12696640293313423 |
| 39 | 1 |
| 40 | -6367871182840222481 |
| 41 | 1 |
| 42 | 35351107998094669831 |
| 43 | 1 |
| 44 | -83499808737903072705023 |
| 45 | 1 |
| 46 | 12690449182849194963361 |
| 47 | 1 |