Number of integers in the interval [2,A289661(n)] whose greatest prime factor is equal to the n-th popular prime A385503(n).

A289664

Number of integers in the interval [2,A289661(n)] whose greatest prime factor is equal to the n-th popular prime A385503(n).

Terms

    a(0) =1a(1) =1a(2) =8a(3) =10a(4) =67a(5) =140a(6) =344a(7) =563a(8) =947a(9) =1197a(10) =2846a(11) =7357a(12) =7621a(13) =7629a(14) =48357a(15) =161507a(16) =697875a(17) =2760913a(18) =8354317a(19) =9754751a(20) =20284680a(21) =21082412a(22) =43030537a(23) =96835105a(24) =318536223a(25) =534252383a(26) =672026918a(27) =873944930a(28) =1996949860a(29) =2720035791

External references