n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 4 |
3 | 7 |
4 | 32 |
5 | 68 |
6 | 320 |
7 | 747 |
8 | 3588 |
9 | 8884 |
10 | 43112 |
11 | 111054 |
12 | 542840 |
13 | 1439280 |
14 | 7068896 |
15 | 19157363 |
16 | 94420380 |
17 | 260343268 |
18 | 1286463464 |
19 | 3596962122 |
20 | 17809428792 |
21 | 50372422384 |
22 | 249792782560 |
23 | 713390782142 |
24 | 3542022471496 |
25 | 10199612069128 |
26 | 50692207741840 |
27 | 147016742815612 |
28 | 731273455228208 |
29 | 2134040173232352 |
[1,1,4,7,32,68,320,747,3588,8884,43112,111054, 542840,1439280,7068896,19157363,94420380, 260343268,1286463464,3596962122,17809428792, 50372422384,249792782560,713390782142, 3542022471496,10199612069128,50692207741840, 147016742815612,731273455228208,2134040173232352] |