156558

Appears in sequences

• Number of true prime powers whose binary order, ceiling(log_2(p^x)), is n.at n=45A036380
• a(n) = (2*(-1)^n - 2^(n+1) + 3*n*2^n)/9.at n=15A140960
• a(n) = Sum_{k=0..n} k^p*q^k, where p=1, q=-2.at n=14A232600