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 | 4 |
| 3 | -1 |
| 4 | 11 |
| 5 | -6 |
| 6 | 1 |
| 7 | 26 |
| 8 | -22 |
| 9 | 8 |
| 10 | -1 |
| 11 | 57 |
| 12 | -64 |
| 13 | 37 |
| 14 | -10 |
| 15 | 1 |
| 16 | 120 |
| 17 | -163 |
| 18 | 130 |
| 19 | -56 |
| 20 | 12 |
| 21 | -1 |
| 22 | 247 |
| 23 | -382 |
| 24 | 386 |
| 25 | -232 |
| 26 | 79 |
| 27 | -14 |
| 28 | 1 |
| 29 | 502 |
| 30 | -848 |
| 31 | 1024 |
| 32 | -794 |
| 33 | 378 |
| 34 | -106 |
| 35 | 16 |
| 36 | -1 |
| 37 | 1013 |
| 38 | -1816 |
| 39 | 2510 |
| 40 | -2380 |
| 41 | 1471 |
| 42 | -576 |
| 43 | 137 |
| 44 | -18 |
| 45 | 1 |
| 46 | 2036 |
| 47 | -3797 |
| 48 | 5812 |
| 49 | -6476 |
| 50 | 4944 |
| 51 | -2517 |
| 52 | 834 |
| 53 | -172 |
| 54 | 20 |
| 55 | -1 |
| 56 | 4083 |
| 57 | -7814 |
| 58 | 12911 |
| 59 | -16384 |
| 60 | 14893 |
| 61 | -9402 |
| 62 | 4048 |
| 63 | -1160 |
| 64 | 211 |
| 65 | -22 |
| 66 | 1 |