login

A141531 as a simple table

na(n)
01
11
21
3-2
44
5-8
616
7-32
864
9-128
10256
11-512
121024
13-2048
144096
15-8192
1616384
17-32768
1865536
19-131072
20262144
21-524288
221048576
23-2097152
244194304
25-8388608
2616777216
27-33554432
2867108864
29-134217728
30268435456
31-536870912
321073741824
33-2147483648

[1,1,1,-2,4,-8,16,-32,64,-128,256,-512,1024,-2048,
 4096,-8192,16384,-32768,65536,-131072,262144,
 -524288,1048576,-2097152,4194304,-8388608,
 16777216,-33554432,67108864,-134217728,268435456,
 -536870912,1073741824,-2147483648]