48126

Appears in sequences

• a(n) = [ a(n-1)/a(1) + a(n-3)/a(3) + a(n-5)/a(5) + ... ], for n >= 3.at n=34A022865
• Numbers n such that Bernoulli number B_{n} has denominator 3318.at n=34A272383
• Numbers k such that the sum of the divisors of k is of the form m^3 + 1.at n=39A289384
• a(n) = 2*(a(n-1) + a(n-3)) - a(n-4), with a(0) = 1, a(1) = 2, a(2) = 5 and a(3) = 12.at n=13A319172
• Number of tripling steps to reach 1 in the 3x+1 (Collatz) problem starting with the n-th Mersenne prime.at n=21A390817