A243345 - cp's OEIS frontend

A243345 a(1)=1; thereafter, if n is k-th squarefree number [i.e., n = A005117(k)], a(n) = 2a(k-1); otherwise, when n is k-th nonsquarefree number [i.e., n = A013929(k)], a(n) = 2a(k)+1.

n	a(n)
1	1
2	2
3	4
4	3
5	8
6	6
7	16
8	5
9	9
10	12
11	32
12	7
13	10
14	18
15	24
16	17
17	64
18	13
19	14
20	33
21	20
22	36
23	48
24	11
25	19
26	34
27	25
28	65
29	128
30	26
31	28
32	15
33	66
34	40
35	72
36	21
37	96
38	22
39	38
40	37
41	68
42	50
43	130
44	49
45	35
46	256
47	52
48	129
49	27
50	29
51	56
52	67
53	30
54	41
55	132
56	73
57	80
58	144
59	42
60	97
61	192
62	44
63	23
64	39
65	76
66	74
67	136
68	69
69	100

[1, 2, 4, 3, 8, 6, 16, 5, 9, 12, 32, 7, 10, 18, 24, 17, 64, 13, 14, 33, 20, 36, 48, 11, 19, 34, 25, 65, 128, 26, 28, 15, 66, 40, 72, 21, 96, 22, 38, 37, 68, 50, 130, 49, 35, 256, 52, 129, 27, 29, 56, 67, 30, 41, 132, 73, 80, 144, 42, 97, 192, 44, 23, 39, 76, 74, 136, 69, 100]

cp's OEIS Frontend

A243345 a(1)=1; thereafter, if n is k-th squarefree number [i.e., n = A005117(k)], a(n) = 2a(k-1); otherwise, when n is k-th nonsquarefree number [i.e., n = A013929(k)], a(n) = 2a(k)+1.

Table of values

List of values

n	a(n)
1	1
2	2
3	4
4	3
5	8
6	6
7	16
8	5
9	9
10	12
11	32
12	7
13	10
14	18
15	24
16	17
17	64
18	13
19	14
20	33
21	20
22	36
23	48
24	11
25	19
26	34
27	25
28	65
29	128
30	26
31	28
32	15
33	66
34	40
35	72
36	21
37	96
38	22
39	38
40	37
41	68
42	50
43	130
44	49
45	35
46	256
47	52
48	129
49	27
50	29
51	56
52	67
53	30
54	41
55	132
56	73
57	80
58	144
59	42
60	97
61	192
62	44
63	23
64	39
65	76
66	74
67	136
68	69
69	100

n	a(n)
1	1
2	2
3	4
4	3
5	8
6	6
7	16
8	5
9	9
10	12
11	32
12	7
13	10
14	18
15	24
16	17
17	64
18	13
19	14
20	33
21	20
22	36
23	48
24	11
25	19
26	34
27	25
28	65
29	128
30	26
31	28
32	15
33	66
34	40
35	72
36	21
37	96
38	22
39	38
40	37
41	68
42	50
43	130
44	49
45	35
46	256
47	52
48	129
49	27
50	29
51	56
52	67
53	30
54	41
55	132
56	73
57	80
58	144
59	42
60	97
61	192
62	44
63	23
64	39
65	76
66	74
67	136
68	69
69	100

cp's OEIS Frontend

A243345 a(1)=1; thereafter, if n is k-th squarefree number [i.e., n = A005117(k)], a(n) = 2*a(k-1); otherwise, when n is k-th nonsquarefree number [i.e., n = A013929(k)], a(n) = 2*a(k)+1.

Table of values

List of values

A243345 a(1)=1; thereafter, if n is k-th squarefree number [i.e., n = A005117(k)], a(n) = 2a(k-1); otherwise, when n is k-th nonsquarefree number [i.e., n = A013929(k)], a(n) = 2a(k)+1.

n	a(n)
1	1
2	2
3	4
4	3
5	8
6	6
7	16
8	5
9	9
10	12
11	32
12	7
13	10
14	18
15	24
16	17
17	64
18	13
19	14
20	33
21	20
22	36
23	48
24	11
25	19
26	34
27	25
28	65
29	128
30	26
31	28
32	15
33	66
34	40
35	72
36	21
37	96
38	22
39	38
40	37
41	68
42	50
43	130
44	49
45	35
46	256
47	52
48	129
49	27
50	29
51	56
52	67
53	30
54	41
55	132
56	73
57	80
58	144
59	42
60	97
61	192
62	44
63	23
64	39
65	76
66	74
67	136
68	69
69	100