622637

Properties

Appears in sequences

• Numerator of Sum_{k=0..n} (-1)^k/(2*k+1).at n=8A007509
• Number of binary strings of length n with no substrings equal to 0001, 0110, or 0111.at n=40A164476
• a(n) = numerator( (1/(4*n + 2))*Sum_{i=0..2*n} (-1)^i/(2*i+1) ).at n=4A392685
• Prime numbersat n=50811