A228897 - cp's OEIS frontend

A228897 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*y) are edges.

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	8
8	9
9	10
10	12
11	13
12	15
13	16
14	18
15	20
16	21
17	24
18	26
19	30
20	32
21	34
22	35
23	39
24	40
25	42
26	48
27	52
28	54
29	55
30	60
31	63
32	66
33	68
34	70
35	72
36	75
37	84
38	88
39	89
40	90
41	96
42	102
43	104
44	108
45	110
46	112
47	117
48	126
49	130
50	135
51	136
52	138
53	144
54	145
55	150
56	160
57	165
58	168
59	174
60	176
61	178

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 21, 24, 26, 30, 32, 34, 35, 39, 40, 42, 48, 52, 54, 55, 60, 63, 66, 68, 70, 72, 75, 84, 88, 89, 90, 96, 102, 104, 108, 110, 112, 117, 126, 130, 135, 136, 138, 144, 145, 150, 160, 165, 168, 174, 176, 178]

cp's OEIS Frontend

A228897 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*y) are edges.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	8
8	9
9	10
10	12
11	13
12	15
13	16
14	18
15	20
16	21
17	24
18	26
19	30
20	32
21	34
22	35
23	39
24	40
25	42
26	48
27	52
28	54
29	55
30	60
31	63
32	66
33	68
34	70
35	72
36	75
37	84
38	88
39	89
40	90
41	96
42	102
43	104
44	108
45	110
46	112
47	117
48	126
49	130
50	135
51	136
52	138
53	144
54	145
55	150
56	160
57	165
58	168
59	174
60	176
61	178

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	8
8	9
9	10
10	12
11	13
12	15
13	16
14	18
15	20
16	21
17	24
18	26
19	30
20	32
21	34
22	35
23	39
24	40
25	42
26	48
27	52
28	54
29	55
30	60
31	63
32	66
33	68
34	70
35	72
36	75
37	84
38	88
39	89
40	90
41	96
42	102
43	104
44	108
45	110
46	112
47	117
48	126
49	130
50	135
51	136
52	138
53	144
54	145
55	150
56	160
57	165
58	168
59	174
60	176
61	178

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	8
8	9
9	10
10	12
11	13
12	15
13	16
14	18
15	20
16	21
17	24
18	26
19	30
20	32
21	34
22	35
23	39
24	40
25	42
26	48
27	52
28	54
29	55
30	60
31	63
32	66
33	68
34	70
35	72
36	75
37	84
38	88
39	89
40	90
41	96
42	102
43	104
44	108
45	110
46	112
47	117
48	126
49	130
50	135
51	136
52	138
53	144
54	145
55	150
56	160
57	165
58	168
59	174
60	176
61	178