n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 1 |
3 | 3 |
4 | 12 |
5 | 56 |
6 | 289 |
7 | 1602 |
8 | 9367 |
9 | 57075 |
10 | 359346 |
11 | 2323416 |
12 | 15356446 |
13 | 103389175 |
14 | 707107627 |
15 | 4901988047 |
16 | 34384943850 |
17 | 243694702311 |
18 | 1742953208739 |
19 | 12567593026554 |
20 | 91280392585747 |
21 | 667341975412356 |
22 | 4907899368783645 |
23 | 36289929612761691 |
24 | 269660272111724536 |
25 | 2012845416966620068 |
26 | 15087243969226496324 |
27 | 113521159338891300347 |
28 | 857211201390859034536 |
[0,1,1,3,12,56,289,1602,9367,57075,359346,2323416, 15356446,103389175,707107627,4901988047, 34384943850,243694702311,1742953208739, 12567593026554,91280392585747,667341975412356, 4907899368783645,36289929612761691, 269660272111724536,2012845416966620068, 15087243969226496324,113521159338891300347, 857211201390859034536] |