Numbers k = p_i^e_i * p_j^e_j such that i/e_i + j/e_j = 1 for e_i, e_j >= 1, p_i, p_j distinct prime numbers.
A387978
Numbers k = p_i^e_i * p_j^e_j such that i/e_i + j/e_j = 1 for e_i, e_j >= 1, p_i, p_j distinct prime numbers.
Terms
- a(0) =216a(1) =324a(2) =10000a(3) =62500a(4) =537824a(5) =759375a(6) =941192a(7) =1265625a(8) =4100625a(9) =23059204a(10) =52734375a(11) =85766121a(12) =113379904a(13) =466948881a(14) =8031810176a(15) =13051691536a(16) =42618442977a(17) =64339296875a(18) =84835994984a(19) =90075015625a(20) =229783203125
External references
- oeis: A387978