Let b be a composite number, c be the smallest composite number greater than b and coprime to b, and d = c-b. This sequence contains all b such that d is neither a prime nor a square.
A353203
Let b be a composite number, c be the smallest composite number greater than b and coprime to b, and d = c-b. This sequence contains all b such that d is neither a prime nor a square.
Terms
- a(0) =67613590a(1) =72808450a(2) =125918320a(3) =153469030a(4) =190281850a(5) =229119880a(6) =328315900a(7) =339204910a(8) =360203140a(9) =395961280a(10) =447304000a(11) =450075340a(12) =692309530a(13) =844334920a(14) =861327610a(15) =909001390a(16) =1029358330a(17) =1166831380a(18) =1178236510a(19) =1321005400a(20) =1344348610a(21) =1366379080a(22) =2035500610a(23) =2045710810a(24) =2156564410
External references
- oeis: A353203