Least k such that the sum of the semiprime divisors equals n times the sum of the prime divisors, or 0 if no such k exists.
A227419
Least k such that the sum of the semiprime divisors equals n times the sum of the prime divisors, or 0 if no such k exists.
Terms
- a(0) =4a(1) =9a(2) =90a(3) =25a(4) =300a(5) =49a(6) =735a(7) =1770a(8) =7644a(9) =121a(10) =2541a(11) =169a(12) =5187a(13) =6710a(14) =8463a(15) =289a(16) =10982a(17) =361a(18) =11913a(19) =13202a(20) =24339a(21) =529a(22) =18515a(23) =19513a(24) =37851a(25) =20723a(26) =43239a(27) =841a(28) =35322a(29) =961
External references
- oeis: A227419