n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 4 |
4 | 17 |
5 | 51 |
6 | 136 |
7 | 393 |
8 | 1233 |
9 | 3865 |
10 | 11851 |
11 | 36301 |
12 | 112520 |
13 | 351352 |
14 | 1098189 |
15 | 3433704 |
16 | 10758609 |
17 | 33794505 |
18 | 106344793 |
19 | 335061790 |
20 | 1056924667 |
21 | 3338026857 |
22 | 10554163533 |
23 | 33402840615 |
24 | 105809430024 |
25 | 335444908176 |
26 | 1064268538776 |
27 | 3379009937161 |
28 | 10735253448349 |
29 | 34127137228747 |
[1,1,4,17,51,136,393,1233,3865,11851,36301,112520, 351352,1098189,3433704,10758609,33794505, 106344793,335061790,1056924667,3338026857, 10554163533,33402840615,105809430024,335444908176, 1064268538776,3379009937161,10735253448349, 34127137228747] |