218761

Properties

Appears in sequences

• Define C(n) by the recursion C(0) = 5*i where i^2 = -1, C(n+1) = 1/(1 + C(n)), then a(n) = 5*(-1)^n/Im(C(n)) where Im(z) denotes the imaginary part of z.at n=11A069962
• Primes of form n^2 + 20736.at n=34A256840
• Prime numbersat n=19507