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 | -5 |
| 4 | -12 |
| 5 | -27 |
| 6 | -58 |
| 7 | -121 |
| 8 | -248 |
| 9 | -503 |
| 10 | 8 |
| 11 | 7 |
| 12 | 4 |
| 13 | -3 |
| 14 | -18 |
| 15 | -49 |
| 16 | -112 |
| 17 | -239 |
| 18 | -494 |
| 19 | -1005 |
| 20 | 16 |
| 21 | 13 |
| 22 | 6 |
| 23 | -9 |
| 24 | -40 |
| 25 | -103 |
| 26 | -230 |
| 27 | -485 |
| 28 | -996 |
| 29 | -2019 |
| 30 | 22 |
| 31 | 15 |
| 32 | 0 |
| 33 | -31 |
| 34 | -94 |
| 35 | -221 |
| 36 | -476 |
| 37 | -987 |
| 38 | -2010 |
| 39 | -4057 |
| 40 | 24 |
| 41 | 9 |
| 42 | -22 |
| 43 | -85 |
| 44 | -212 |
| 45 | -467 |
| 46 | -978 |
| 47 | -2001 |
| 48 | -4048 |
| 49 | -8143 |
| 50 | 18 |
| 51 | -13 |
| 52 | -76 |
| 53 | -203 |
| 54 | -458 |
| 55 | -969 |
| 56 | -1992 |
| 57 | -4039 |
| 58 | -8134 |
| 59 | -16325 |
| 60 | -4 |