n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 9 |
4 | 64 |
5 | 635 |
6 | 8142 |
7 | 128394 |
8 | 2405784 |
9 | 52237296 |
10 | 1289735280 |
11 | 35680244490 |
12 | 1093124356560 |
13 | 36734913680244 |
14 | 1343439671120904 |
15 | 53111942243599680 |
16 | 2256996523715952480 |
17 | 102589277119862240160 |
18 | 4966450613410762025280 |
19 | 255110144003301741908832 |
[1,2,9,64,635,8142,128394,2405784,52237296, 1289735280,35680244490,1093124356560, 36734913680244,1343439671120904,53111942243599680, 2256996523715952480,102589277119862240160, 4966450613410762025280,255110144003301741908832] |