n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 5 |
4 | 13 |
5 | 35 |
6 | 96 |
7 | 264 |
8 | 719 |
9 | 1913 |
10 | 4875 |
11 | 11478 |
12 | 22860 |
13 | 26044 |
14 | -77216 |
15 | -793820 |
16 | -4394125 |
17 | -20304455 |
18 | -85805571 |
19 | -343282020 |
20 | -1321898694 |
21 | -4943906064 |
22 | -18052305410 |
23 | -64551823869 |
24 | -226418611750 |
25 | -779487689870 |
26 | -2633172840764 |
27 | -8717790419014 |
[1,1,2,5,13,35,96,264,719,1913,4875,11478,22860, 26044,-77216,-793820,-4394125,-20304455,-85805571, -343282020,-1321898694,-4943906064,-18052305410, -64551823869,-226418611750,-779487689870, -2633172840764,-8717790419014] |