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 | -14 |
| 5 | -35 |
| 6 | -69 |
| 7 | -119 |
| 8 | -188 |
| 9 | -279 |
| 10 | -395 |
| 11 | -539 |
| 12 | -714 |
| 13 | -923 |
| 14 | -1169 |
| 15 | -1455 |
| 16 | -1784 |
| 17 | -2159 |
| 18 | -2583 |
| 19 | -3059 |
| 20 | -3590 |
| 21 | -4179 |
| 22 | -4829 |
| 23 | -5543 |
| 24 | -6324 |
| 25 | -7175 |
| 26 | -8099 |
| 27 | -9099 |
| 28 | -10178 |
| 29 | -11339 |
| 30 | -12585 |
| 31 | -13919 |
| 32 | -15344 |
| 33 | -16863 |
| 34 | -18479 |
| 35 | -20195 |
| 36 | -22014 |
| 37 | -23939 |
| 38 | -25973 |
| 39 | -28119 |
| 40 | -30380 |
| 41 | -32759 |
| 42 | -35259 |
| 43 | -37883 |