28778
domain: N
Appears in sequences
- Least positive k such that k * [RSA-640]^n - 1 is prime, where RSA-640 is the 193 decimal digit RSA challenge number A391940(14).at n=14A108573
- Number of distinct solutions of sum{i=1..5}(x(2i-1)*x(2i)) = 1 (mod n), with x() in 0..n-1.at n=6A180807
- T(n,k)=number of distinct solutions of sum{i=1..k}(x(2i-1)*x(2i)) = 1 (mod n), with x() in 0..n-1.at n=61A180813
- Number of nX5 0..1 arrays with rows, columns and antidiagonals unimodal and diagonals nondecreasing.at n=8A223767