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 | 1 |
| 2 | -3 |
| 3 | 1 |
| 4 | -12 |
| 5 | -9 |
| 6 | -8 |
| 7 | -20 |
| 8 | -59 |
| 9 | 1 |
| 10 | -43 |
| 11 | -54 |
| 12 | -101 |
| 13 | -77 |
| 14 | -89 |
| 15 | 127 |
| 16 | -307 |
| 17 | -135 |
| 18 | -26 |
| 19 | -170 |
| 20 | 73 |
| 21 | 85 |
| 22 | 199 |
| 23 | -252 |
| 24 | -888 |
| 25 | 1066 |
| 26 | 924 |
| 27 | 1 |
| 28 | 1177 |
| 29 | -405 |
| 30 | 2970 |
| 31 | -464 |
| 32 | 1009 |
| 33 | -164 |
| 34 | 5577 |
| 35 | 10396 |
| 36 | -2978 |
| 37 | -665 |
| 38 | 10869 |
| 39 | -1286 |
| 40 | 14576 |
| 41 | -819 |
| 42 | 15499 |
| 43 | -902 |
| 44 | 19934 |
| 45 | 17551 |
| 46 | 32546 |
| 47 | -1080 |
| 48 | -51905 |
| 49 | 53089 |
| 50 | 74231 |
| 51 | -24309 |
| 52 | 55317 |
| 53 | -1377 |
| 54 | -80 |
| 55 | 42439 |
| 56 | 103857 |
| 57 | -75581 |
| 58 | 117016 |
| 59 | -1710 |