499590

Appears in sequences

• Number of compositions (ordered partitions) of n into powers of 2.at n=24A023359
• Areas of more than one primitive Pythagorean triangle.at n=10A024407
• Integers x such that for some integer y we have uphi(x) = uphi(y) = x-y, where uphi(n) = A047994(n) is the unitary totient function: If n = Product p_i^e_i, uphi(n) = Product (p_i^e_i - 1).at n=32A067739
• Numbers whose set of base 14 digits is {0,D}, where D base 14 = 13 base 10.at n=18A097260
• Triangle T(n,k) represents the coefficients of (x^9*d/dx)^n, where n=1,2,3,...;generalization of Stirling numbers of second kind A008277, Lah-numbers A008297.at n=24A223511
• Number of compositions (ordered partitions) of n into pentanacci numbers 1,2,4,8,16,31, ... (A001591).at n=24A357455
• Number of compositions (ordered partitions) of n into two or more powers of 2.at n=24A357534