Numbers k such that the odd part of (1+k) divides (1 + odd part of A048250(k)), where A048250 is sum of the squarefree divisors of n.

A387410

Numbers k such that the odd part of (1+k) divides (1 + odd part of A048250(k)), where A048250 is sum of the squarefree divisors of n.

Terms

    a(0) =1a(1) =3a(2) =7a(3) =15a(4) =31a(5) =63a(6) =127a(7) =255a(8) =511a(9) =639a(10) =1023a(11) =2047a(12) =2431a(13) =4095a(14) =5247a(15) =8191a(16) =14335a(17) =16383a(18) =32767a(19) =40959a(20) =44031a(21) =57855a(22) =65535a(23) =90111a(24) =126975a(25) =131071a(26) =204799a(27) =229375a(28) =262143a(29) =376831

External references