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 | 3 |
| 4 | 3 |
| 5 | 7 |
| 6 | 4 |
| 7 | 15 |
| 8 | 2 |
| 9 | 21 |
| 10 | 9 |
| 11 | 31 |
| 12 | 13 |
| 13 | 63 |
| 14 | 4 |
| 15 | 10 |
| 16 | 42 |
| 17 | 127 |
| 18 | -3 |
| 19 | 255 |
| 20 | 14 |
| 21 | 21 |
| 22 | 88 |
| 23 | 511 |
| 24 | 22 |
| 25 | 117 |
| 26 | 320 |
| 27 | 24 |
| 28 | 97 |
| 29 | 1023 |
| 30 | -22 |
| 31 | 2047 |
| 32 | -36 |
| 33 | 190 |
| 34 | 1444 |
| 35 | 82 |
| 36 | 34 |
| 37 | 4095 |
| 38 | -200 |
| 39 | 120 |
| 40 | 306 |
| 41 | 8191 |
| 42 | 14 |
| 43 | 16383 |
| 44 | -59 |
| 45 | 13 |
| 46 | 4180 |
| 47 | 32767 |
| 48 | 30 |
| 49 | 609 |
| 50 | -103 |
| 51 | 15494 |
| 52 | -303 |
| 53 | 65535 |
| 54 | 30 |
| 55 | 141 |
| 56 | -32 |
| 57 | -6 |
| 58 | 8920 |
| 59 | 131071 |
| 60 | 132 |
| 61 | 262143 |
| 62 | 506030 |
| 63 | 564 |
| 64 | 834 |
| 65 | 658 |
| 66 | -149 |