n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 7 |
4 | 87 |
5 | 1667 |
6 | 42971 |
7 | 1387941 |
8 | 53739797 |
9 | 2421203261 |
10 | 124265293581 |
11 | 7150727869627 |
12 | 455701200668539 |
13 | 31846907669892495 |
14 | 2421141672213472919 |
15 | 198897819736367366729 |
16 | 17556316040185549675881 |
17 | 1656973308228250148662329 |
18 | 166509657562826568857464281 |
19 | 17749793745710561363581851663 |
20 | 2000554650909636157531234301439 |
[1,1,1,7,87,1667,42971,1387941,53739797, 2421203261,124265293581,7150727869627, 455701200668539,31846907669892495, 2421141672213472919,198897819736367366729, 17556316040185549675881,1656973308228250148662329, 166509657562826568857464281, 17749793745710561363581851663, 2000554650909636157531234301439] |