147453

Appears in sequences

• Let u(1)=u(2)=1, u(3)=n, u(k) = (1/2)*abs(2*u(k-1) -u(k-2)-u(k-3)); sequence gives values of n such that Sum_{k>=1} u(k) is an integer.at n=29A078113
• Sums of three Mersenne primes.at n=49A174055