71994

Appears in sequences

• Smaller of two consecutive numbers with the same prime signature not occurring earlier.at n=18A091405
• Intersection of A108027, A108028, A108029 and A108030.at n=28A108109
• Numbers k such that s(k) = s(k+1) where s(k) is the sum of unitary, squarefree divisors of k, including 1 (A092261).at n=18A327875
• Numbers k such that k and k+1 both have the prime signature (2,1,1,1) (A189982).at n=21A336658