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 | -4 |
| 3 | -7 |
| 4 | -10 |
| 5 | -13 |
| 6 | -16 |
| 7 | -19 |
| 8 | -22 |
| 9 | -25 |
| 10 | -28 |
| 11 | -31 |
| 12 | -34 |
| 13 | -37 |
| 14 | -40 |
| 15 | -43 |
| 16 | -46 |
| 17 | -49 |
| 18 | -52 |
| 19 | -55 |
| 20 | -58 |
| 21 | -61 |
| 22 | -64 |
| 23 | -67 |
| 24 | -70 |
| 25 | -73 |
| 26 | -76 |
| 27 | -79 |
| 28 | -82 |
| 29 | -85 |
| 30 | -88 |
| 31 | -91 |
| 32 | -94 |
| 33 | -97 |
| 34 | -100 |
| 35 | -103 |
| 36 | -106 |
| 37 | -109 |
| 38 | -112 |
| 39 | -115 |
| 40 | -118 |
| 41 | -121 |
| 42 | -124 |
| 43 | -127 |
| 44 | -130 |
| 45 | -133 |
| 46 | -136 |
| 47 | -139 |
| 48 | -142 |
| 49 | -145 |
| 50 | -148 |
| 51 | -151 |
| 52 | -154 |
| 53 | -157 |
| 54 | -160 |
| 55 | -163 |
| 56 | -166 |
| 57 | -169 |