Number of bifurcating nodes at generation n in the binary tree of persistently squarefree numbers (see A293230).
A293522
Number of bifurcating nodes at generation n in the binary tree of persistently squarefree numbers (see A293230).
Terms
- a(0) =1a(1) =1a(2) =2a(3) =2a(4) =3a(5) =5a(6) =5a(7) =5a(8) =9a(9) =12a(10) =17a(11) =21a(12) =27a(13) =36a(14) =50a(15) =64a(16) =89a(17) =114a(18) =156a(19) =201a(20) =261a(21) =353a(22) =480a(23) =639a(24) =870a(25) =1163a(26) =1562a(27) =2116a(28) =2826a(29) =3798
External references
- oeis: A293522