login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A201823
as a simple table
n
a(n)
0
1
1
1
2
55
3
300830572
4
1414282077098335379544565517191
[1,1,55,300830572,1414282077098335379544565517191]
