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 | 1 |
| 2 | 3 |
| 3 | 6 |
| 4 | 2 |
| 5 | 7 |
| 6 | 13 |
| 7 | 20 |
| 8 | 12 |
| 9 | 3 |
| 10 | 13 |
| 11 | 24 |
| 12 | 12 |
| 13 | -1 |
| 14 | -15 |
| 15 | -30 |
| 16 | -46 |
| 17 | -63 |
| 18 | -81 |
| 19 | -100 |
| 20 | -120 |
| 21 | -141 |
| 22 | -163 |
| 23 | -140 |
| 24 | -164 |
| 25 | -189 |
| 26 | -215 |
| 27 | -242 |
| 28 | -270 |
| 29 | -299 |
| 30 | -329 |
| 31 | -360 |
| 32 | -392 |
| 33 | -425 |
| 34 | -459 |
| 35 | -494 |
| 36 | -530 |
| 37 | -567 |
| 38 | -605 |
| 39 | -644 |
| 40 | -684 |
| 41 | -725 |
| 42 | -767 |
| 43 | -810 |
| 44 | -854 |
| 45 | -899 |
| 46 | -945 |
| 47 | -992 |
| 48 | -1040 |
| 49 | -1089 |
| 50 | -1139 |
| 51 | -1190 |
| 52 | -1242 |
| 53 | -1295 |
| 54 | -1349 |
| 55 | -1404 |
| 56 | -1460 |