a(n) = smallest k such that A282026(k) = n, or 0 if no such k exists.

Terms

a(0) =3a(1) =2a(2) =0a(3) =13a(4) =19a(5) =0a(6) =427a(7) =4a(8) =0a(9) =0a(10) =1a(11) =0a(12) =802a(13) =99412a(14) =0a(15) =3097a(16) =7a(17) =0a(18) =637a(19) =0a(20) =0a(21) =7225627a(22) =30898822a(23) =0a(24) =0a(25) =280134277a(26) =0a(27) =31705902442a(28) =43190647a(29) =0