a(n) is the first number == 1 (mod n) that is the product of n primes, counted by multiplicity.
A368217
a(n) is the first number == 1 (mod n) that is the product of n primes, counted by multiplicity.
Terms
- a(0) =2a(1) =9a(2) =28a(3) =81a(4) =176a(5) =15625a(6) =288a(7) =6561a(8) =1792a(9) =137781a(10) =17920a(11) =244140625a(12) =30720a(13) =7971615a(14) =311296a(15) =43046721a(16) =1492992a(18) =2752512a(19) =3486784401a(20) =38797312a(21) =242137805625a(22) =28311552a(24) =184549376a(26) =2583691264a(28) =9512681472
External references
- oeis: A368217