login

A157503 as a simple table

na(n)
01
1-1
2-4
3-21
4-160
5-1505
6-17136
7-226093
8-3334528
9-53031105
10-864640000
11-12957006821
12-107329453056
134548002439071
14409321789829120
1523780752998703875
161257249577352658944
1765336038911885770623

[1,-1,-4,-21,-160,-1505,-17136,-226093,-3334528,
 -53031105,-864640000,-12957006821,-107329453056,
 4548002439071,409321789829120,23780752998703875,
 1257249577352658944,65336038911885770623]