55569

Appears in sequences

• a(n) is the smallest value of m such that prod(m) = n*length(m)*sum(m) where prod(m) is the product of the digits of m, length(m) is the number of digits of m, sum(m) is the sum of the digits of m; or 0 if no such m exists.at n=44A064022
• G.f. satisfies: A(x) = (1 + x*A(x)^2)/(1 - x^2).at n=10A143330
• G.f. satisfies: A(x) = exp( Sum_{n>=1} [A(x)^n + A(x)^-n]*x^n/n ).at n=10A171199
• Number of 2 X 2 matrices with all elements in {0,1,...,n} and determinant >= 2n.at n=19A210367