n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 3 |
4 | 6 |
5 | 12 |
6 | 31 |
7 | 89 |
8 | 303 |
9 | 1119 |
10 | 4649 |
11 | 20572 |
12 | 99241 |
13 | 502622 |
14 | 2725840 |
15 | 15424019 |
16 | 92211327 |
17 | 571446565 |
18 | 3716191974 |
19 | 24920512847 |
20 | 174169990243 |
21 | 1251875604302 |
22 | 9326245177768 |
23 | 71241318920624 |
24 | 562221733320241 |
25 | 4535497053407716 |
26 | 37677863148632647 |
27 | 319551379756283637 |
[1,2,3,6,12,31,89,303,1119,4649,20572,99241, 502622,2725840,15424019,92211327,571446565, 3716191974,24920512847,174169990243,1251875604302, 9326245177768,71241318920624,562221733320241, 4535497053407716,37677863148632647, 319551379756283637] |