Numbers n such that the sum of squarefree numbers from the smallest prime factor of n to the largest prime factor of n is a square.
A074253
Numbers n such that the sum of squarefree numbers from the smallest prime factor of n to the largest prime factor of n is a square.
Terms
- a(0) =1a(1) =111a(2) =159a(3) =299a(4) =323a(5) =333a(6) =477a(7) =555a(8) =777a(9) =793a(10) =795a(11) =913a(12) =922a(13) =999a(14) =1113a(15) =1221a(16) =1431a(17) =1443a(18) =1665a(19) =1749a(20) =1844a(21) =1887a(22) =2067a(23) =2109a(24) =2331a(25) =2385a(26) =2553a(27) =2703a(28) =2766a(29) =2775
External references
- oeis: A074253