n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 6 |
4 | 29 |
5 | 205 |
6 | 1900 |
7 | 21592 |
8 | 289325 |
9 | 4456773 |
10 | 77512394 |
11 | 1501537750 |
12 | 32053808641 |
13 | 747561173689 |
14 | 18911411905052 |
15 | 515798244940224 |
16 | 15088848988966409 |
17 | 471291927943037785 |
18 | 15655172277281565058 |
19 | 551102758946418279862 |
20 | 20495154400760992784213 |
21 | 802951447375696586076213 |
[1,1,2,6,29,205,1900,21592,289325,4456773, 77512394,1501537750,32053808641,747561173689, 18911411905052,515798244940224,15088848988966409, 471291927943037785,15655172277281565058, 551102758946418279862,20495154400760992784213, 802951447375696586076213] |