n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 1 |
3 | 2 |
4 | 7 |
5 | 14 |
6 | 47 |
7 | 104 |
8 | 383 |
9 | 944 |
10 | 3839 |
11 | 10394 |
12 | 46079 |
13 | 135134 |
14 | 645119 |
15 | 2027024 |
16 | 10321919 |
17 | 34459424 |
18 | 185794559 |
19 | 654729074 |
20 | 3715891199 |
21 | 13749310574 |
22 | 81749606399 |
23 | 316234143224 |
24 | 1961990553599 |
25 | 7905853580624 |
26 | 51011754393599 |
[0,0,1,2,7,14,47,104,383,944,3839,10394,46079, 135134,645119,2027024,10321919,34459424,185794559, 654729074,3715891199,13749310574,81749606399, 316234143224,1961990553599,7905853580624, 51011754393599] |