Nodes of tree generated as follows: (1,2) is an edge, and if (x,y) is an edge, then (y,x*y) and (y,x^2 + y^2) are edges.
A228939
Nodes of tree generated as follows: (1,2) is an edge, and if (x,y) is an edge, then (y,x*y) and (y,x^2 + y^2) are edges.
Terms
- a(0) =1a(1) =2a(2) =4a(3) =5a(4) =8a(5) =10a(6) =16a(7) =20a(8) =29a(9) =32a(10) =50a(11) =68a(12) =80a(13) =125a(14) =128a(15) =145a(16) =256a(17) =320a(18) =416a(19) =500a(20) =544a(21) =640a(22) =866a(23) =1088a(24) =1250a(25) =1600a(26) =2048a(27) =2600a(28) =4205a(29) =4688
External references
- oeis: A228939