The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | -1 |
| 3 | 0 |
| 4 | 3 |
| 5 | -8 |
| 6 | 9 |
| 7 | 0 |
| 8 | -10 |
| 9 | 0 |
| 10 | 24 |
| 11 | -24 |
| 12 | 0 |
| 13 | 0 |
| 14 | 15 |
| 15 | 0 |
| 16 | 9 |
| 17 | -80 |
| 18 | 90 |
| 19 | 0 |
| 20 | -43 |
| 21 | 0 |
| 22 | 57 |
| 23 | -80 |
| 24 | 13 |
| 25 | 0 |
| 26 | 175 |
| 27 | -200 |
| 28 | 15 |
| 29 | -120 |
| 30 | 313 |
| 31 | 0 |
| 32 | -346 |
| 33 | 0 |
| 34 | 450 |
| 35 | -168 |
| 36 | 19 |
| 37 | -744 |
| 38 | 830 |
| 39 | 0 |
| 40 | 21 |
| 41 | -224 |
| 42 | -287 |
| 43 | 0 |
| 44 | 405 |
| 45 | 0 |
| 46 | 1014 |
| 47 | -1968 |
| 48 | 25 |
| 49 | 0 |
| 50 | 2813 |
| 51 | -784 |
| 52 | -2448 |
| 53 | -360 |
| 54 | 1575 |
| 55 | 0 |
| 56 | 2765 |
| 57 | -3520 |
| 58 | 450 |
| 59 | -440 |
| 60 | 31 |
[1,0,-1,0,3,-8,9,0,-10,0,24,-24,0,0,15,0,9,-80,90, 0,-43,0,57,-80,13,0,175,-200,15,-120,313,0,-346,0, 450,-168,19,-744,830,0,21,-224,-287,0,405,0,1014, -1968,25,0,2813,-784,-2448,-360,1575,0,2765,-3520, 450,-440,31] |