A123703 - cp's OEIS frontend

A123703 a(1)=a(2)=1. For n >= 3, a(n) = |(product{k=1 to n-1} a(k)) - (sum{j=1 to n-1} a(j))|.

n	a(n)
1	1
2	1
3	1
4	2
5	3
6	2
7	2
8	12
9	264
10	75744
11	5758891776
12	33165272341980979200
13	1099935289708766240667530888404210286592
14	1209857641546707521062997518664689369471121315619387834957574646785625397657600

[1, 1, 1, 2, 3, 2, 2, 12, 264, 75744, 5758891776, 33165272341980979200, 1099935289708766240667530888404210286592, 1209857641546707521062997518664689369471121315619387834957574646785625397657600]

cp's OEIS Frontend

A123703 a(1)=a(2)=1. For n >= 3, a(n) = |(product{k=1 to n-1} a(k)) - (sum{j=1 to n-1} a(j))|.

Table of values

List of values