37735

Appears in sequences

• Numbers n such that phi(n-1) + phi(n+1) = phi(2n).at n=16A067701
• Integer lengths of the Champernowne primes (concatenation of first a(n) entries (digits) of A033307 is prime).at n=6A071620
• Magnetic Tower of Hanoi, number of moves of disk number k, generated by a certain algorithm, yielding a "forward moving" non-optimal solution of the [RED ; NEUTRAL ; NEUTRAL] or [NEUTRAL ; NEUTRAL ; BLUE] pre-colored puzzle.at n=11A183120