n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 8 |
4 | 31 |
5 | 147 |
6 | 853 |
7 | 5824 |
8 | 45741 |
9 | 405845 |
10 | 4012711 |
11 | 43733976 |
12 | 520795003 |
13 | 6726601063 |
14 | 93651619881 |
15 | 1398047697152 |
16 | 22275111534553 |
17 | 377278848390249 |
18 | 6768744159489931 |
19 | 128228860181918440 |
20 | 2557808459478878871 |
21 | 53585748788874537851 |
22 | 1176328664895760953853 |
[1,1,3,8,31,147,853,5824,45741,405845,4012711, 43733976,520795003,6726601063,93651619881, 1398047697152,22275111534553,377278848390249, 6768744159489931,128228860181918440, 2557808459478878871,53585748788874537851, 1176328664895760953853] |