n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 5 |
4 | 13 |
5 | 37 |
6 | 111 |
7 | 345 |
8 | 1104 |
9 | 3611 |
10 | 12016 |
11 | 40548 |
12 | 138414 |
13 | 477076 |
14 | 1657956 |
15 | 5802920 |
16 | 20436910 |
17 | 72369903 |
18 | 257518806 |
19 | 920333307 |
20 | 3302003826 |
21 | 11888979066 |
22 | 42944410207 |
23 | 155576009845 |
24 | 565127618392 |
25 | 2057903975752 |
26 | 7510967300206 |
[1,1,2,5,13,37,111,345,1104,3611,12016,40548, 138414,477076,1657956,5802920,20436910,72369903, 257518806,920333307,3302003826,11888979066, 42944410207,155576009845,565127618392, 2057903975752,7510967300206] |