n | a(n) |
---|---|
1 | 20 |
2 | 420 |
3 | 7831 |
4 | 128232 |
5 | 1971414 |
6 | 29134076 |
7 | 418632185 |
8 | 5894815754 |
9 | 81718671716 |
10 | 1119014223138 |
11 | 15171181272721 |
12 | 203998929406004 |
13 | 2724149465085496 |
14 | 36163754541884778 |
15 | 477648079847735215 |
16 | 6280858615510607492 |
[20,420,7831,128232,1971414,29134076,418632185, 5894815754,81718671716,1119014223138, 15171181272721,203998929406004,2724149465085496, 36163754541884778,477648079847735215, 6280858615510607492] |