178402

Appears in sequences

• Number of solutions to c(1)*prime(1) +...+ c(2n+1)*prime(2n+1) = 0, where c(i) = +-1 for i > 1, c(1) = 1.at n=13A022894
• Number of ways of partitioning the set of the first n primes into two subsets whose sums differ at most by 1.at n=27A306443