Refactorable numbers (A033950) that are simultaneously arithmetic (A003601) and harmonic (A001599).

A331666

Refactorable numbers (A033950) that are simultaneously arithmetic (A003601) and harmonic (A001599).

Terms

    a(0) =1a(1) =672a(2) =30240a(3) =23569920a(4) =45532800a(5) =164989440a(6) =447828480a(7) =623397600a(8) =1381161600a(9) =1862023680a(10) =2144862720a(11) =3134799360a(12) =3831421440a(13) =13584130560a(14) =14182439040a(15) =16569653760a(16) =21943595520a(17) =22933532160a(18) =34482792960a(19) =35032757760a(20) =40752391680a(21) =53621568000a(22) =56481384960

External references