Squarefree numbers k such that k^2 is abundant, and d^2 is nonabundant for any proper divisor d of k.
A381741
Squarefree numbers k such that k^2 is abundant, and d^2 is nonabundant for any proper divisor d of k.
Terms
- a(0) =6a(1) =10a(2) =14a(3) =105a(4) =286a(5) =374a(6) =418a(7) =442a(8) =506a(9) =2145a(10) =2805a(11) =3135a(12) =3315a(13) =3705a(14) =3795a(15) =4485a(16) =4785a(17) =4845a(18) =5115a(19) =5655a(20) =6045a(21) =6105a(22) =6765a(23) =7095a(24) =7755a(25) =8745a(26) =9735a(27) =10065a(28) =11362a(29) =14326
External references
- oeis: A381741