272640

Appears in sequences

• a(n) = (A005867(n+1) - A000165(n))/96.at n=8A065412
• a(n) is the number of 2 X 2 matrices over the integers mod n that are invertible mod n for every permutation of their elements.at n=40A367926
• Triangle read by rows: T(n,k) are the unique integer coefficients such that Sum_{k=0..n} T(n,k)*A125790(k,m)/2^(n*k) = (m+2)^n for all n >= 0, m >= 0.at n=18A391910