194370

Appears in sequences

• Numbers k such that phi(k)*sigma(k) is a cube.at n=33A114077
• Number of strictly increasing arrangements of 5 numbers in -(n+3)..(n+3) with sum zero.at n=36A188183
• a(n) = k if the first appearance of n in A077618 is at index k, or 0 if k does not appear in A077618.at n=41A291056
• a(n) = [x^n] (x - 1)^4/((1 - 2*x)*(x^2 - 3*x + 1)).at n=13A341104