Numbers k such that (6*k+1)*(12*k+1)*(18*k+1) is a Carmichael number which is the product of four prime numbers.

A221743

Numbers k such that (6*k+1)*(12*k+1)*(18*k+1) is a Carmichael number which is the product of four prime numbers.

Terms

    a(0) =5a(1) =11a(2) =15a(3) =61a(4) =85a(5) =115a(6) =455a(7) =661a(8) =700a(9) =805a(10) =920a(11) =1225a(12) =1326a(13) =1910a(14) =2961a(15) =4935a(16) =5425a(17) =6565a(18) =8175a(19) =10885a(20) =11375a(21) =12155a(22) =13230a(23) =18315a(24) =37800a(25) =39325a(26) =45325a(27) =59726a(28) =69440a(29) =99645

External references