n | a(n) |
---|---|
1 | 1 |
2 | 3 |
3 | 18 |
4 | 38 |
5 | 195 |
6 | 585 |
7 | 607 |
8 | 3948 |
9 | 11976 |
10 | 42415 |
11 | 127921 |
12 | 56067 |
13 | 666938 |
14 | 2082798 |
15 | 10769251 |
16 | 22610393 |
17 | 110616780 |
18 | 315726436 |
19 | 408228944 |
20 | 2384863439 |
21 | 7159829169 |
22 | 23350950650 |
23 | 74348867826 |
24 | 49863537606 |
25 | 401947783347 |
26 | 1296027221145 |
27 | 6159163094580 |
28 | 13796041908620 |
29 | 60717334308629 |
30 | 181812784262527 |
[1,3,18,38,195,585,607,3948,11976,42415,127921, 56067,666938,2082798,10769251,22610393,110616780, 315726436,408228944,2384863439,7159829169, 23350950650,74348867826,49863537606,401947783347, 1296027221145,6159163094580,13796041908620, 60717334308629,181812784262527] |