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

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =1a(7) =3a(8) =27a(9) =146a(10) =492a(11) =1336a(12) =3156a(13) =7082a(14) =14938a(15) =29282a(16) =55012a(17) =100707a(18) =178063a(19) =306310a(20) =514381a(21) =846627a(22) =1370257a(23) =2181324a(24) =3429390