Numbers n such that the best rational approximation to H(n) with denominator <=n is an integer, where H(n) denotes the n-th harmonic number (A001008/A002805).

A079353

Numbers n such that the best rational approximation to H(n) with denominator <=n is an integer, where H(n) denotes the n-th harmonic number (A001008/A002805).

Terms

    a(0) =1a(1) =3a(2) =4a(3) =10a(4) =11a(5) =30a(6) =31a(7) =82a(8) =83a(9) =226a(10) =227a(11) =615a(12) =616a(13) =1673a(14) =1674a(15) =4549a(16) =4550a(17) =12366a(18) =12367a(19) =33616a(20) =33617

External references