Numbers k such that S(k)=d(k), where S(k) is the Kempner function (A002034) and d(k) is the number of divisors of k (A000005).

A073307

Numbers k such that S(k)=d(k), where S(k) is the Kempner function (A002034) and d(k) is the number of divisors of k (A000005).

Terms

    a(0) =1a(1) =2a(2) =8a(3) =18a(4) =45a(5) =128a(6) =486a(7) =1215a(8) =1701a(9) =2673a(10) =3750a(11) =5000a(12) =8750a(13) =13122a(14) =13125a(15) =13750a(16) =16250a(17) =16875a(18) =20625a(19) =21250a(20) =23750a(21) =24375a(22) =31875a(23) =32768a(24) =32805a(25) =35625a(26) =45927a(27) =48125a(28) =56875a(29) =72171

External references