50634

Appears in sequences

• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 50.at n=8A031728
• Triangle T(n,k) arising from enumeration of permutations with ordered orbits, read by rows (1<=k<=n).at n=38A059418
• a(n) = 81*n^2 + 9.at n=24A157888
• Numbers n such that n, n+1, and the sum of those two numbers each have 4 or more distinct prime factors.at n=1A168630
• a(n) = a(n-1) + 3*a(n-2) -2*a(n-3) - 2*a(n-4), where a(0) = 1, a(1) = -2, a(2) = 2, a(3) = 1.at n=20A295855
• Expansion of e.g.f. LambertW(x / (1 - 3*x)).at n=6A376107