Number of dying nodes (withering branches) at generation n in the binary tree of persistently squarefree numbers (A293230).

A293520

Number of dying nodes (withering branches) at generation n in the binary tree of persistently squarefree numbers (A293230).

Terms

    a(0) =0a(1) =0a(2) =0a(3) =0a(4) =1a(5) =2a(6) =2a(7) =1a(8) =2a(9) =3a(10) =3a(11) =4a(12) =9a(13) =6a(14) =13a(15) =11a(16) =21a(17) =32a(18) =40a(19) =52a(20) =60a(21) =64a(22) =90a(23) =129a(24) =169a(25) =242a(26) =321a(27) =434a(28) =549a(29) =808

External references