Number of consecutive runs of 3 odd nonprimes congruent to 1 mod 4 below 10^n.

A093187

Number of consecutive runs of 3 odd nonprimes congruent to 1 mod 4 below 10^n.

Terms

    a(0) =0a(1) =1a(2) =10a(3) =53a(4) =390a(5) =2794a(6) =21215a(7) =167055a(8) =1347999a(9) =11084015a(10) =92708718a(11) =786663767a(12) =6757618852

External references