Difference between 4^n and the product of primes less than or equal to n.
A319857
Difference between 4^n and the product of primes less than or equal to n.
Terms
- a(0) =0a(1) =3a(2) =14a(3) =58a(4) =250a(5) =994a(6) =4066a(7) =16174a(8) =65326a(9) =261934a(10) =1048366a(11) =4191994a(12) =16774906a(13) =67078834a(14) =268405426a(15) =1073711794a(16) =4294937266a(17) =17179358674a(18) =68718966226a(19) =274868207254
External references
- oeis: A319857