57619

Appears in sequences

• Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 93 ones.at n=0A031861
• Expansion of (2-sqrt(1+4x))/(2-x-sqrt(1+4x)).at n=13A141344
• Number of walks within N^2 (the first quadrant of Z^2) starting at (0,0) and consisting of n steps taken from {(-1, -1), (-1, 1), (-1, 0), (0, 1), (1, 0)}.at n=9A151285
• a(n) = prime(n) * prime(2*n-1).at n=36A219603
• Expansion of 1/(1 - x - 2*x^2/(1 - 3*x^3 - 4*x^4/(1 - 5*x^5 - 6*x^6/(1 - 7*x^7 - 8*x^8/(1 - ...))))), a continued fraction.at n=14A292855