Carmichael numbers of the form (6*k+1)*(12*k+1)*(18*k+1), where 6*k+1, 12*k+1 and 18*k+1 are all primes.
A033502
Carmichael numbers of the form (6*k+1)*(12*k+1)*(18*k+1), where 6*k+1, 12*k+1 and 18*k+1 are all primes.
Terms
- a(0) =1729a(1) =294409a(2) =56052361a(3) =118901521a(4) =172947529a(5) =216821881a(6) =228842209a(7) =1299963601a(8) =2301745249a(9) =9624742921a(10) =11346205609a(11) =13079177569a(12) =21515221081a(13) =27278026129a(14) =65700513721a(15) =71171308081a(16) =100264053529a(17) =168003672409a(18) =172018713961a(19) =173032371289a(20) =464052305161
External references
- oeis: A033502