n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 2 |
3 | 13 |
4 | 128 |
5 | 1562 |
6 | 23328 |
7 | 411771 |
8 | 8388608 |
9 | 193710244 |
10 | 5000000000 |
11 | 142655835305 |
12 | 4458050224128 |
13 | 151437553296126 |
14 | 5556003412779008 |
15 | 218946945190429687 |
16 | 9223372036854775808 |
17 | 413620130943168382088 |
18 | 19673204037648268787712 |
19 | 989209827830156794561989 |
[0,0,2,13,128,1562,23328,411771,8388608,193710244, 5000000000,142655835305,4458050224128, 151437553296126,5556003412779008, 218946945190429687,9223372036854775808, 413620130943168382088,19673204037648268787712, 989209827830156794561989] |