Number of six-prime Carmichael numbers less than 10^n.

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =0a(8) =0a(9) =14a(10) =99a(11) =459a(12) =1714a(13) =5270a(14) =14401a(15) =36907a(16) =86696a(17) =194306a(18) =414660a(19) =849564a(20) =1681744a(21) =3230120a(22) =6034046a(23) =11007792a(24) =19665194