39858075

Appears in sequences

• Numbers whose sum of exponents is equal to the product of prime factors.at n=26A071174
• a(n) = (n/4)*3^(n/2)*((1+sqrt(3))^2+(-1)^n*(1-sqrt(3))^2).at n=25A187273
• a(n) = Product prime(k), where k ranges over the lengths of all arithmetic progressions formed from the divisors of n (with at least two distinct terms each); a(1) = 2 by convention.at n=17A319354