A152121 - cp's OEIS frontend

A152121 a(0) = 4; for n>0, a(n) = a(n-1)^2 - 2^(1+2^(n-1)).

n	a(n)
0	4
1	12
2	136
3	18464
4	340918784
5	116225617283907584
6	13508394113025357323362163662782464
7	182476711512818130204254420972394401125552102555370860811711166808064

[4, 12, 136, 18464, 340918784, 116225617283907584, 13508394113025357323362163662782464, 182476711512818130204254420972394401125552102555370860811711166808064]

cp's OEIS Frontend

A152121 a(0) = 4; for n>0, a(n) = a(n-1)^2 - 2^(1+2^(n-1)).

Table of values

List of values