n | a(n) |
---|---|
1 | 0 |
2 | 1 |
3 | 1 |
4 | 4 |
5 | 6 |
6 | 18 |
7 | 35 |
8 | 93 |
9 | 214 |
10 | 549 |
11 | 1362 |
12 | 3534 |
13 | 9102 |
14 | 23951 |
15 | 63192 |
16 | 168561 |
17 | 451764 |
18 | 1219290 |
19 | 3305783 |
20 | 9008027 |
21 | 24643538 |
22 | 67681372 |
23 | 186504925 |
24 | 515566016 |
25 | 1429246490 |
26 | 3972598378 |
27 | 11068477743 |
28 | 30908170493 |
29 | 86488245455 |
30 | 242481159915 |
31 | 681048784377 |
32 | 1916051725977 |
33 | 5399062619966 |
[0,1,1,4,6,18,35,93,214,549,1362,3534,9102,23951, 63192,168561,451764,1219290,3305783,9008027, 24643538,67681372,186504925,515566016,1429246490, 3972598378,11068477743,30908170493,86488245455, 242481159915,681048784377,1916051725977, 5399062619966] |