A228939 - cp's OEIS frontend

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.

n	a(n)
1	1
2	2
3	4
4	5
5	8
6	10
7	16
8	20
9	29
10	32
11	50
12	68
13	80
14	125
15	128
16	145
17	256
18	320
19	416
20	500
21	544
22	640
23	866
24	1088
25	1250
26	1600
27	2048
28	2600
29	4205
30	4688
31	5120
32	6464
33	6800
34	8192
35	8320
36	15725
37	16640
38	21866
39	25000
40	25114
41	34816
42	36992
43	51200
44	66560
45	102656
46	128000
47	130000

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 50, 68, 80, 125, 128, 145, 256, 320, 416, 500, 544, 640, 866, 1088, 1250, 1600, 2048, 2600, 4205, 4688, 5120, 6464, 6800, 8192, 8320, 15725, 16640, 21866, 25000, 25114, 34816, 36992, 51200, 66560, 102656, 128000, 130000]

cp's OEIS Frontend

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.

Table of values

List of values