n | a(n) |
---|---|
1 | 1 |
2 | -2 |
3 | 4 |
4 | -8 |
5 | 14 |
6 | -22 |
7 | 28 |
8 | -14 |
9 | -80 |
10 | 420 |
11 | -1430 |
12 | 4128 |
13 | -10798 |
14 | 26176 |
15 | -59114 |
16 | 123442 |
17 | -232240 |
18 | 365888 |
19 | -355616 |
20 | -475892 |
21 | 4318112 |
22 | -17471288 |
23 | 56635490 |
24 | -163101656 |
25 | 432173038 |
26 | -1067080032 |
27 | 2456709054 |
28 | -5216642696 |
29 | 9906435640 |
30 | -15415122000 |
31 | 12937725806 |
32 | 33034018944 |
33 | -238942986520 |
[1,-2,4,-8,14,-22,28,-14,-80,420,-1430,4128, -10798,26176,-59114,123442,-232240,365888,-355616, -475892,4318112,-17471288,56635490,-163101656, 432173038,-1067080032,2456709054,-5216642696, 9906435640,-15415122000,12937725806,33034018944, -238942986520] |