n | a(n) |
---|---|
1 | 1 |
2 | 10 |
3 | 70 |
4 | 492 |
5 | 3445 |
6 | 24118 |
7 | 168826 |
8 | 1181784 |
9 | 8272489 |
10 | 57907426 |
11 | 405351982 |
12 | 2837463876 |
13 | 19862247133 |
14 | 139035729934 |
15 | 973250109538 |
16 | 6812750766768 |
17 | 47689255367377 |
18 | 333824787571642 |
19 | 2336773513001494 |
20 | 16357414591010460 |
21 | 114501902137073221 |
22 | 801513314959512550 |
[1,10,70,492,3445,24118,168826,1181784,8272489, 57907426,405351982,2837463876,19862247133, 139035729934,973250109538,6812750766768, 47689255367377,333824787571642,2336773513001494, 16357414591010460,114501902137073221, 801513314959512550] |