Number of integers in the interval [2, A289663(n)] whose greatest prime factor is equal to the n-th popular prime A385503(n).

A289665

Number of integers in the interval [2, A289663(n)] whose greatest prime factor is equal to the n-th popular prime A385503(n).

Terms

    a(0) =4a(1) =14a(2) =25a(3) =77a(4) =151a(5) =428a(6) =616a(7) =1005a(8) =1517a(9) =2902a(10) =7664a(11) =7722a(12) =8284a(13) =48380a(14) =161644a(15) =698074a(16) =2761234a(17) =8357693a(18) =9758410a(19) =20285553a(20) =21123128a(21) =43031555a(22) =96835113a(23) =318539488a(24) =534261087a(25) =672081919a(26) =873949289a(27) =1997008416a(28) =2720040151a(29) =3321778833

External references