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 | -3 |
| 3 | 10 |
| 4 | -19 |
| 5 | 26 |
| 6 | -30 |
| 7 | 50 |
| 8 | -83 |
| 9 | 91 |
| 10 | -78 |
| 11 | 122 |
| 12 | -190 |
| 13 | 170 |
| 14 | -150 |
| 15 | 260 |
| 16 | -339 |
| 17 | 290 |
| 18 | -273 |
| 19 | 362 |
| 20 | -494 |
| 21 | 500 |
| 22 | -366 |
| 23 | 530 |
| 24 | -830 |
| 25 | 651 |
| 26 | -510 |
| 27 | 820 |
| 28 | -950 |
| 29 | 842 |
| 30 | -780 |
| 31 | 962 |
| 32 | -1363 |
| 33 | 1220 |
| 34 | -870 |
| 35 | 1300 |
| 36 | -1729 |
| 37 | 1370 |
| 38 | -1086 |
| 39 | 1700 |
| 40 | -2158 |
| 41 | 1682 |
| 42 | -1500 |
| 43 | 1850 |
| 44 | -2318 |
| 45 | 2366 |
| 46 | -1590 |
| 47 | 2210 |
| 48 | -3390 |
| 49 | 2451 |
| 50 | -1953 |
| 51 | 2900 |
| 52 | -3230 |
| 53 | 2810 |
| 54 | -2460 |
| 55 | 3172 |