n | a(n) |
---|---|
1 | 1 |
2 | -1 |
3 | -2 |
4 | -4 |
5 | -14 |
6 | -38 |
7 | -132 |
8 | -420 |
9 | -1426 |
10 | -4834 |
11 | -16796 |
12 | -58688 |
13 | -208012 |
14 | -742636 |
15 | -2674384 |
16 | -9693976 |
17 | -35357670 |
18 | -129641774 |
19 | -477638700 |
20 | -1767253368 |
21 | -6564119892 |
22 | -24466233428 |
23 | -91482563640 |
24 | -343059494120 |
25 | -1289904147128 |
26 | -4861945985428 |
27 | -18367353066440 |
28 | -69533549429280 |
29 | -263747951750360 |
30 | -1002242211282032 |
[1,-1,-2,-4,-14,-38,-132,-420,-1426,-4834,-16796, -58688,-208012,-742636,-2674384,-9693976, -35357670,-129641774,-477638700,-1767253368, -6564119892,-24466233428,-91482563640, -343059494120,-1289904147128,-4861945985428, -18367353066440,-69533549429280,-263747951750360, -1002242211282032] |