186704

Appears in sequences

• A generalized difference set on the set of all integers (lambda = 2).at n=31A049399
• Array: row n shows the coefficients of the characteristic polynomial of the n-th principal submatrix of f(i,j)=(2i-1 if i=j and 1 otherwise) for i>=1 and j>=1 (as in A204131).at n=39A204132
• Numbers n such that n and n+1 both have 20 divisors.at n=29A274361