Numbers k such that sopf(k)*nud(k) = pi(k), where sopf(k)=A008472, nud(k)=A034444 and pi(k)=A000720.

A064015

Numbers k such that sopf(k)*nud(k) = pi(k), where sopf(k)=A008472, nud(k)=A034444 and pi(k)=A000720.

Terms

    a(0) =1a(1) =8a(2) =72a(3) =135a(4) =504a(5) =726a(6) =3431a(7) =5313a(8) =8614a(9) =10249a(10) =28721a(11) =45705a(12) =83832a(13) =115111a(14) =116057a(15) =235781a(16) =262844a(17) =349351a(18) =396815a(19) =530205a(20) =680229a(21) =2140452a(22) =3514448a(23) =5092315a(24) =5093695a(25) =9520080a(26) =12154006a(27) =12207991a(28) =12213847a(29) =13802199

External references