Numbers n such that the number of divisors of n+1 divides n and the number of divisors of n divides n+1.
A272353
Numbers n such that the number of divisors of n+1 divides n and the number of divisors of n divides n+1.
Terms
- a(0) =3a(1) =15a(2) =1023a(3) =6399a(4) =10815a(5) =15375a(6) =26895a(7) =53823a(8) =55695a(9) =65535a(10) =80655a(11) =107583a(12) =118335a(13) =262143a(14) =309135a(15) =440895a(16) =614655a(17) =633615a(18) =817215a(19) =891135a(20) =1236543a(21) =1784895a(22) =2676495a(23) =2715903a(24) =2849343a(25) =2985983a(26) =3182655a(27) =3225615a(28) =3268863a(29) =4194303
External references
- oeis: A272353