n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 1 |
4 | 1 |
5 | 2 |
6 | 7 |
7 | 16 |
8 | 51 |
9 | 224 |
10 | 1165 |
11 | 7454 |
12 | 56349 |
13 | 481309 |
14 | 4548786 |
15 | 46829325 |
16 | 519812910 |
17 | 6177695783 |
18 | 78190425826 |
19 | 1049510787100 |
20 | 14886252250208 |
21 | 222442888670708 |
22 | 3492326723315796 |
23 | 57468395960854710 |
24 | 989052970923320185 |
25 | 17767732298980160822 |
26 | 332572885090541084172 |
27 | 6475438355244504235759 |
28 | 130954580036269713385884 |
[0,0,1,1,2,7,16,51,224,1165,7454,56349,481309, 4548786,46829325,519812910,6177695783,78190425826, 1049510787100,14886252250208,222442888670708, 3492326723315796,57468395960854710, 989052970923320185,17767732298980160822, 332572885090541084172,6475438355244504235759, 130954580036269713385884] |