A252755 - cp's OEIS frontend

A252755 Tree of Eratosthenes, mirrored: a(0) = 1, a(1) = 2; after which, a(2n) = 2*a(n), a(2n+1) = A250469(a(n)).

n	a(n)
0	1
1	2
2	4
3	3
4	8
5	9
6	6
7	5
8	16
9	21
10	18
11	25
12	12
13	15
14	10
15	7
16	32
17	45
18	42
19	55
20	36
21	51
22	50
23	49
24	24
25	33
26	30
27	35
28	20
29	27
30	14
31	11
32	64
33	93
34	90
35	115
36	84
37	123
38	110
39	91
40	72
41	105
42	102
43	125
44	100
45	147
46	98
47	121
48	48
49	69
50	66
51	85
52	60
53	87
54	70
55	77
56	40
57	57
58	54
59	65
60	28
61	39
62	22
63	13
64	128
65	189
66	186
67	235
68	180
69	267
70	230
71	203
72	168
73	249
74	246
75	305
76	220
77	327
78	182
79	187
80	144

[1, 2, 4, 3, 8, 9, 6, 5, 16, 21, 18, 25, 12, 15, 10, 7, 32, 45, 42, 55, 36, 51, 50, 49, 24, 33, 30, 35, 20, 27, 14, 11, 64, 93, 90, 115, 84, 123, 110, 91, 72, 105, 102, 125, 100, 147, 98, 121, 48, 69, 66, 85, 60, 87, 70, 77, 40, 57, 54, 65, 28, 39, 22, 13, 128, 189, 186, 235, 180, 267, 230, 203, 168, 249, 246, 305, 220, 327, 182, 187, 144]

cp's OEIS Frontend

A252755 Tree of Eratosthenes, mirrored: a(0) = 1, a(1) = 2; after which, a(2n) = 2*a(n), a(2n+1) = A250469(a(n)).

Table of values

List of values

n	a(n)
0	1
1	2
2	4
3	3
4	8
5	9
6	6
7	5
8	16
9	21
10	18
11	25
12	12
13	15
14	10
15	7
16	32
17	45
18	42
19	55
20	36
21	51
22	50
23	49
24	24
25	33
26	30
27	35
28	20
29	27
30	14
31	11
32	64
33	93
34	90
35	115
36	84
37	123
38	110
39	91
40	72
41	105
42	102
43	125
44	100
45	147
46	98
47	121
48	48
49	69
50	66
51	85
52	60
53	87
54	70
55	77
56	40
57	57
58	54
59	65
60	28
61	39
62	22
63	13
64	128
65	189
66	186
67	235
68	180
69	267
70	230
71	203
72	168
73	249
74	246
75	305
76	220
77	327
78	182
79	187
80	144

n	a(n)
0	1
1	2
2	4
3	3
4	8
5	9
6	6
7	5
8	16
9	21
10	18
11	25
12	12
13	15
14	10
15	7
16	32
17	45
18	42
19	55
20	36
21	51
22	50
23	49
24	24
25	33
26	30
27	35
28	20
29	27
30	14
31	11
32	64
33	93
34	90
35	115
36	84
37	123
38	110
39	91
40	72
41	105
42	102
43	125
44	100
45	147
46	98
47	121
48	48
49	69
50	66
51	85
52	60
53	87
54	70
55	77
56	40
57	57
58	54
59	65
60	28
61	39
62	22
63	13
64	128
65	189
66	186
67	235
68	180
69	267
70	230
71	203
72	168
73	249
74	246
75	305
76	220
77	327
78	182
79	187
80	144

n	a(n)
0	1
1	2
2	4
3	3
4	8
5	9
6	6
7	5
8	16
9	21
10	18
11	25
12	12
13	15
14	10
15	7
16	32
17	45
18	42
19	55
20	36
21	51
22	50
23	49
24	24
25	33
26	30
27	35
28	20
29	27
30	14
31	11
32	64
33	93
34	90
35	115
36	84
37	123
38	110
39	91
40	72
41	105
42	102
43	125
44	100
45	147
46	98
47	121
48	48
49	69
50	66
51	85
52	60
53	87
54	70
55	77
56	40
57	57
58	54
59	65
60	28
61	39
62	22
63	13
64	128
65	189
66	186
67	235
68	180
69	267
70	230
71	203
72	168
73	249
74	246
75	305
76	220
77	327
78	182
79	187
80	144