147560

Appears in sequences

• Numbers n such that the arithmetic, geometric and harmonic means of phi(n) and sigma(n) are all integers.at n=36A065146
• Numbers k such that sigma(k) = 9*phi(k).at n=19A163667
• Degrees of irreducible representations of orthogonal group O10+(2).at n=34A214472
• Degrees of irreducible representations of orthogonal group O10+(2).at n=35A214472
• a(n) = 4*(n + 1)*(n + 2)*(4*n + 3)/3.at n=29A267522
• Triangle T(n,k) read by rows: coefficients of polynomials P_n(t) defined in Formula section.at n=34A286783
• Number of nonisomorphic proper colorings of partition multicycle graph using six colors.at n=90A298266
• Number of ways to place a non-attacking black king and white king on an n X n board, up to rotation and reflection.at n=33A357723