51302

Appears in sequences

• Numbers of the form 12*k + 2 with nonempty inverse totient set.at n=13A063668
• Squarefree oblong (pronic) numbers having an odd number of prime factors.at n=32A098827
• Numbers n such that 2 * (1^n + 2^n + 3^n + ... + n^n) is not 0 (mod n), but 2 * (1^d + 2^d + 3^d + ... + d^d) is 0 (mod d) for each other d | n.at n=22A280187
• a(n) = (n^2 + 1)*(n^2 + 2).at n=15A304579
• Primitive terms of A108569.at n=31A346277