62441

Appears in sequences

• Number of double nodes (exactly two nodes on that level) for all Motzkin paths of length n.at n=14A051485
• Interprimes which are of the form s*prime, s=17.at n=23A075292
• Given the infinite continued fraction i+(i/(i+(i/(i+...)))), where i is the square root of (-1), this is the denominator of the real part of the convergents.at n=16A091807
• Given the infinite continued fraction i+(i/(i+(i/(i+...)))), where i is the square root of (-1), this is the denominator of the imaginary part of the convergents.at n=16A091809
• a(n) = |b(n)|^2 = x^2 + 3*y^2 where (x,y,y,y) is the quaternion b(n) of the sequence b of quaternions defined by b(0)=1,b(1)=1, b(n) = b(n-1) + b(n-2)*(0,c,c,c) where c = 1/sqrt(3).at n=16A105309
• a(n) = n^3 - 4*n^2 + 6*n - 2.at n=38A188377