224000

Appears in sequences

• Cubes written in base 5.at n=19A004635
• Triangle of coefficients in expansion of (2+5x)^n.at n=39A013621
• Numbers that can be written as k/d(k) in four or more ways, where d(k) = number of divisors of k.at n=21A051346
• Denominator of the permanent of the n-th Hilbert matrix.at n=3A101812
• Partition number array, called M32(-2), related to A004747(n,m) = |S2(-2;n,m)| (generalized Stirling triangle).at n=48A143172
• G.f.: A(x) = exp(Sum_{n>=1} A157311(n)*x^n/n) = Product_{n>=1} (1 + A157311(n-1)*x^n).at n=10A157312
• Triangular array read by rows. T(n,k) is the number of functions f:{1,2,...,n}->{1,2,...,n} that have exactly k 3-cycles. n>=0, 0<=k<=floor(n/3).at n=25A185070
• Numbers n such that n = k/d(k) has exactly 4 solutions, where d(k) = number of divisors of k.at n=19A217125
• a(n) is the denominator of det(I+H) where H is the n X n Hilbert matrix.at n=3A295427