n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 4 |
3 | 25 |
4 | 185 |
5 | 1501 |
6 | 12914 |
7 | 115723 |
8 | 1068505 |
9 | 10094770 |
10 | 97117624 |
11 | 948181724 |
12 | 9370734322 |
13 | 93562986440 |
14 | 942385174150 |
15 | 9563720899515 |
16 | 97696642766654 |
17 | 1003789888620166 |
18 | 10366477185870960 |
19 | 107548800153957745 |
20 | 1120374840689934195 |
21 | 11714707429579539268 |
[1,1,4,25,185,1501,12914,115723,1068505,10094770, 97117624,948181724,9370734322,93562986440, 942385174150,9563720899515,97696642766654, 1003789888620166,10366477185870960, 107548800153957745,1120374840689934195, 11714707429579539268] |