69398

Appears in sequences

• Number of primes whose binary expansion begins '11' (A080166) in range ]2^n,2^(n+1)].at n=20A095766
• Number of nX3 0..1 arrays with every element equal to 0, 3, 4, 5, 6 or 7 king-move adjacent elements, with upper left element zero.at n=11A299316
• a(n) = Sum_{k=1..n-1} binomial(n, k)*2^(n-k-1)*(k-1).at n=9A379745