a(n) is the smallest positive integer k such that 1 + k * prime(n) is a power of two.
A352232
a(n) is the smallest positive integer k such that 1 + k * prime(n) is a power of two.
Terms
- a(0) =1a(1) =3a(2) =1a(3) =93a(4) =315a(5) =15a(6) =13797a(7) =89a(8) =9256395a(9) =1a(10) =1857283155a(11) =25575a(12) =381a(13) =178481a(18) =483939977a(19) =7a(20) =6958934353a(22) =23
External references
- oeis: A352232