45957domain: NAppears in sequencesLast term where no prime sums occur in A161190 in a 4-diagonal set of 24 terms.at n=25A161193Expansion of (1 + 3*x + 4*x^2 - sqrt(1 - 2*x - 7*x^2))/(4 + 8*x).at n=13A2121994-step Fibonacci sequence starting with 1, 1, 1, 0.at n=19A251705