Suppose n has prime factorization n=p1^a1*p2^a2*...*pk^ak and that D(n) is A006218, then n has all D(ai) even.
A197917
Suppose n has prime factorization n=p1^a1*p2^a2*...*pk^ak and that D(n) is A006218, then n has all D(ai) even.
Terms
- a(0) =1a(1) =16a(2) =32a(3) =64a(4) =81a(5) =128a(6) =243a(7) =256a(8) =625a(9) =729a(10) =1296a(11) =2187a(12) =2401a(13) =2592a(14) =3125a(15) =3888a(16) =5184a(17) =6561a(18) =7776a(19) =10000a(20) =10368a(21) =11664a(22) =14641a(23) =15552a(24) =15625a(25) =16807a(26) =20000a(27) =20736a(28) =23328a(29) =28561
External references
- oeis: A197917