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 | 0 |
| 2 | 3 |
| 3 | 1 |
| 4 | 6 |
| 5 | 0 |
| 6 | 12 |
| 7 | -4 |
| 8 | 19 |
| 9 | -6 |
| 10 | 24 |
| 11 | -12 |
| 12 | 40 |
| 13 | -26 |
| 14 | 50 |
| 15 | -26 |
| 16 | 57 |
| 17 | -39 |
| 18 | 78 |
| 19 | -58 |
| 20 | 100 |
| 21 | -68 |
| 22 | 104 |
| 23 | -80 |
| 24 | 140 |
| 25 | -109 |
| 26 | 151 |
| 27 | -111 |
| 28 | 167 |
| 29 | -137 |
| 30 | 209 |
| 31 | -177 |
| 32 | 240 |
| 33 | -192 |
| 34 | 246 |
| 35 | -198 |
| 36 | 289 |
| 37 | -251 |
| 38 | 311 |
| 39 | -255 |
| 40 | 345 |
| 41 | -303 |
| 42 | 399 |
| 43 | -355 |
| 44 | 439 |
| 45 | -361 |
| 46 | 433 |
| 47 | -385 |
| 48 | 509 |
| 49 | -452 |
| 50 | 545 |
| 51 | -473 |
| 52 | 571 |
| 53 | -517 |
| 54 | 637 |
| 55 | -565 |
| 56 | 685 |
| 57 | -605 |
| 58 | 695 |
| 59 | -635 |
| 60 | 803 |
| 61 | -741 |
| 62 | 837 |
| 63 | -733 |
| 64 | 860 |