Numerators of the sums of reciprocals of the Collatz (3x+1) sequence beginning with n and stopping at 1.

A225761

Numerators of the sums of reciprocals of the Collatz (3x+1) sequence beginning with n and stopping at 1.

Terms

    a(0) =1a(1) =3a(2) =617a(3) =7a(4) =171a(5) =219a(6) =766329a(7) =15a(8) =1061683a(9) =179a(10) =102151a(11) =677a(12) =497a(13) =785777a(14) =10380059a(15) =31a(16) =8861a(17) =360377a(18) =60226515a(19) =183a(20) =2731a(21) =103919a(22) =3339321a(23) =229a(24) =1548244271a(25) =505a(27) =113643

External references