50446

Appears in sequences

• Convolution of A023531 and Lucas numbers.at n=22A023558
• Values of n for which pi_{4,3}(p_n) - pi_{4,1}(p_n) = -1, where p_n is the n-th prime and pi_{m,a}(x) is the number of primes <= x which are congruent to a (mod m).at n=15A051024
• Integers k for which {prime(1), prime(2), ..., prime(k)} (mod 4) is biased towards 1.at n=29A096628
• Number of partitions of n into parts having at most two prime-factors.at n=44A101049
• Catalan transform of Catalan numbers C(n+1).at n=8A130655