Number of consecutive runs of 2 odd nonprimes congruent to 1 mod 4 below 10^n.
A093185
Number of consecutive runs of 2 odd nonprimes congruent to 1 mod 4 below 10^n.
Terms
- a(0) =1a(1) =4a(2) =33a(3) =309a(4) =2805a(5) =25566a(6) =230989a(7) =2106529a(8) =19303539a(9) =177948527a(10) =1649241049a(11) =15360074924a(12) =143682925080
External references
- oeis: A093185