Numbers n such that n-1, n, and n+1 are all products of 7 distinct primes.

Terms

a(0) =41704979954a(1) =124731595066a(2) =365993436094a(3) =366230785766a(4) =367810728790a(5) =368695198806a(6) =589316590786a(7) =598986161410a(8) =607638803134a(9) =673917791834a(10) =710756189898a(11) =753389272714a(12) =762118572046a(13) =772416848554a(14) =806996241806a(15) =832216749090a(16) =874567856590a(17) =905173650094a(18) =933893335166a(19) =958872775134a(20) =970959170390a(21) =985722818366a(22) =997785568130