n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 1 |
3 | 2 |
4 | 3 |
5 | 6 |
6 | 13 |
7 | 30 |
8 | 72 |
9 | 182 |
10 | 467 |
11 | 1222 |
12 | 3245 |
13 | 8722 |
14 | 23663 |
15 | 64758 |
16 | 178459 |
17 | 494922 |
18 | 1380105 |
19 | 3867414 |
20 | 10884821 |
21 | 30756410 |
22 | 87215419 |
23 | 248117618 |
24 | 707952902 |
25 | 2025479210 |
26 | 5809424605 |
27 | 16700811214 |
28 | 48113496645 |
29 | 138884979562 |
30 | 401645917999 |
31 | 1163530868090 |
[0,1,1,2,3,6,13,30,72,182,467,1222,3245,8722, 23663,64758,178459,494922,1380105,3867414, 10884821,30756410,87215419,248117618,707952902, 2025479210,5809424605,16700811214,48113496645, 138884979562,401645917999,1163530868090] |