The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | -3 |
| 4 | 4 |
| 5 | 9 |
| 6 | -12 |
| 7 | 16 |
| 8 | 25 |
| 9 | -27 |
| 10 | -35 |
| 11 | 36 |
| 12 | 37 |
| 13 | -48 |
| 14 | 49 |
| 15 | -59 |
| 16 | 64 |
| 17 | -75 |
| 18 | 81 |
| 19 | 100 |
| 20 | -108 |
| 21 | 121 |
| 22 | 144 |
| 23 | -147 |
| 24 | -159 |
| 25 | 169 |
| 26 | 172 |
| 27 | -192 |
| 28 | 196 |
| 29 | 225 |
| 30 | -227 |
| 31 | -243 |
| 32 | -255 |
| 33 | 256 |
| 34 | 261 |
| 35 | -287 |
| 36 | 289 |
| 37 | -300 |
| 38 | -311 |
| 39 | 324 |
| 40 | -335 |
| 41 | 361 |
| 42 | -363 |
| 43 | 373 |
| 44 | 400 |
| 45 | -432 |
| 46 | 441 |
| 47 | 484 |
| 48 | -507 |
| 49 | 529 |
| 50 | 568 |
| 51 | 576 |
| 52 | -588 |
[0,1,-3,4,9,-12,16,25,-27,-35,36,37,-48,49,-59,64, -75,81,100,-108,121,144,-147,-159,169,172,-192, 196,225,-227,-243,-255,256,261,-287,289,-300,-311, 324,-335,361,-363,373,400,-432,441,484,-507,529, 568,576,-588] |