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 | 1 |
| 3 | 5 |
| 4 | 1 |
| 5 | 19 |
| 6 | -19 |
| 7 | 41 |
| 8 | 1 |
| 9 | 41 |
| 10 | -17 |
| 11 | 109 |
| 12 | -115 |
| 13 | 155 |
| 14 | -7 |
| 15 | 47 |
| 16 | 1 |
| 17 | 271 |
| 18 | -199 |
| 19 | 341 |
| 20 | -161 |
| 21 | 141 |
| 22 | 37 |
| 23 | 505 |
| 24 | -499 |
| 25 | 469 |
| 26 | 71 |
| 27 | 365 |
| 28 | -199 |
| 29 | 811 |
| 30 | -1021 |
| 31 | 929 |
| 32 | 1 |
| 33 | 449 |
| 34 | 163 |
| 35 | 683 |
| 36 | -1159 |
| 37 | 1331 |
| 38 | 221 |
| 39 | 663 |
| 40 | -737 |
| 41 | 1639 |
| 42 | -1659 |
| 43 | 1805 |
| 44 | -251 |
| 45 | 299 |
| 46 | 361 |
| 47 | 2161 |
| 48 | -2035 |
| 49 | 2001 |
| 50 | -467 |
| 51 | 1211 |
| 52 | -265 |
| 53 | 2755 |
| 54 | -1819 |
| 55 | 1927 |
| 56 | -967 |
| 57 | 1545 |
| 58 | 631 |
| 59 | 3421 |
| 60 | -5293 |
| 61 | 3659 |
| 62 | 737 |