Numbers k such that the odd part of (1+k) divides (1 + odd part of A001615(k)), where A001615 is Dedekind's psi-function.

A387415

Numbers k such that the odd part of (1+k) divides (1 + odd part of A001615(k)), where A001615 is Dedekind's psi-function.

Terms

    a(0) =1a(1) =3a(2) =7a(3) =15a(4) =31a(5) =63a(6) =127a(7) =255a(8) =511a(9) =1023a(10) =2047a(11) =2431a(12) =4095a(13) =8191a(14) =14335a(15) =16383a(16) =27135a(17) =32767a(18) =44031a(19) =57855a(20) =65535a(21) =75775a(22) =131071a(23) =204799a(24) =262143a(25) =376831a(26) =524287a(27) =667135a(28) =923647a(29) =1048575

External references