a(n) = A293518(n) - A293519(n); how many more surviving even nodes than surviving (but not bifurcating) odd nodes there are at generation n in the binary tree of persistently squarefree numbers.

A293517

a(n) = A293518(n) - A293519(n); how many more surviving even nodes than surviving (but not bifurcating) odd nodes there are at generation n in the binary tree of persistently squarefree numbers.

Terms

    a(0) =0a(1) =1a(2) =1a(3) =1a(4) =1a(5) =2a(6) =1a(7) =3a(8) =4a(9) =5a(10) =9a(11) =8a(12) =10a(13) =20a(14) =17a(15) =36a(16) =32a(17) =50a(18) =66a(19) =83a(20) =118a(21) =171a(22) =219a(23) =291a(24) =410a(25) =511a(26) =730a(27) =952a(28) =1325a(29) =1665

External references