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 | 2 |
| 3 | -2 |
| 4 | -3 |
| 5 | 1 |
| 6 | 1 |
| 7 | -2 |
| 8 | 2 |
| 9 | 17 |
| 10 | -9 |
| 11 | -32 |
| 12 | 12 |
| 13 | 24 |
| 14 | -6 |
| 15 | -8 |
| 16 | 1 |
| 17 | 1 |
| 18 | -2 |
| 19 | -6 |
| 20 | 25 |
| 21 | 71 |
| 22 | -80 |
| 23 | -218 |
| 24 | 126 |
| 25 | 284 |
| 26 | -106 |
| 27 | -190 |
| 28 | 48 |
| 29 | 69 |
| 30 | -11 |
| 31 | -13 |
| 32 | 1 |
| 33 | 1 |
| 34 | 3 |
| 35 | -6 |
| 36 | -70 |
| 37 | 101 |
| 38 | 506 |
| 39 | -453 |
| 40 | -1592 |
| 41 | 980 |
| 42 | 2658 |
| 43 | -1201 |
| 44 | -2608 |
| 45 | 886 |
| 46 | 1581 |
| 47 | -400 |
| 48 | -600 |
| 49 | 108 |
| 50 | 139 |
| 51 | -16 |
| 52 | -18 |
| 53 | 1 |
| 54 | 1 |
| 55 | 3 |
| 56 | 12 |
| 57 | -88 |
| 58 | -334 |
| 59 | 779 |
| 60 | 2774 |
| 61 | -3226 |
| 62 | -10389 |
| 63 | 7709 |
| 64 | 21620 |
| 65 | -11608 |
| 66 | -27865 |
| 67 | 11496 |
| 68 | 23591 |
| 69 | -7645 |
| 70 | -13512 |
| 71 | 3427 |
| 72 | 5276 |
| 73 | -1020 |
| 74 | -1385 |
| 75 | 193 |
| 76 | 234 |
| 77 | -21 |
| 78 | -23 |
| 79 | 1 |
| 80 | 1 |