105785

Appears in sequences

• a(n) = a(1) + a(2) + ... + a(n-1) + a(m) for n >= 4, where m = n - 1 - 2^p and p is the unique integer such that 2^p < n - 1 <= 2^(p+1), starting with a(1) = 1 and a(2) = a(3) = 2.at n=17A049954
• G.f. satisfies: A(x) = 1 + x*A(x)/(1 - 2*x^2*A(x)^2).at n=12A101786
• Number of primes whose binary representation has length n and which translates ('inter-base translation') to ternary as a prime.at n=24A243159