A243343 - cp's OEIS frontend

A243343 a(1)=1; thereafter, if n is the k-th squarefree number (i.e., n = A005117(k)), a(n) = 1 + (2a(k-1)); otherwise, when n is k-th nonsquarefree number (i.e., n = A013929(k)), a(n) = 2a(k).

n	a(n)
1	1
2	3
3	7
4	2
5	15
6	5
7	31
8	6
9	14
10	11
11	63
12	4
13	13
14	29
15	23
16	30
17	127
18	10
19	9
20	62
21	27
22	59
23	47
24	12
25	28
26	61
27	22
28	126
29	255
30	21
31	19
32	8
33	125
34	55
35	119
36	26
37	95
38	25
39	57
40	58
41	123
42	45
43	253
44	46
45	60
46	511
47	43
48	254
49	20
50	18
51	39
52	124
53	17
54	54
55	251
56	118
57	111
58	239
59	53
60	94
61	191
62	51
63	24
64	56

[1, 3, 7, 2, 15, 5, 31, 6, 14, 11, 63, 4, 13, 29, 23, 30, 127, 10, 9, 62, 27, 59, 47, 12, 28, 61, 22, 126, 255, 21, 19, 8, 125, 55, 119, 26, 95, 25, 57, 58, 123, 45, 253, 46, 60, 511, 43, 254, 20, 18, 39, 124, 17, 54, 251, 118, 111, 239, 53, 94, 191, 51, 24, 56]

cp's OEIS Frontend

A243343 a(1)=1; thereafter, if n is the k-th squarefree number (i.e., n = A005117(k)), a(n) = 1 + (2a(k-1)); otherwise, when n is k-th nonsquarefree number (i.e., n = A013929(k)), a(n) = 2a(k).

Table of values

List of values

n	a(n)
1	1
2	3
3	7
4	2
5	15
6	5
7	31
8	6
9	14
10	11
11	63
12	4
13	13
14	29
15	23
16	30
17	127
18	10
19	9
20	62
21	27
22	59
23	47
24	12
25	28
26	61
27	22
28	126
29	255
30	21
31	19
32	8
33	125
34	55
35	119
36	26
37	95
38	25
39	57
40	58
41	123
42	45
43	253
44	46
45	60
46	511
47	43
48	254
49	20
50	18
51	39
52	124
53	17
54	54
55	251
56	118
57	111
58	239
59	53
60	94
61	191
62	51
63	24
64	56

n	a(n)
1	1
2	3
3	7
4	2
5	15
6	5
7	31
8	6
9	14
10	11
11	63
12	4
13	13
14	29
15	23
16	30
17	127
18	10
19	9
20	62
21	27
22	59
23	47
24	12
25	28
26	61
27	22
28	126
29	255
30	21
31	19
32	8
33	125
34	55
35	119
36	26
37	95
38	25
39	57
40	58
41	123
42	45
43	253
44	46
45	60
46	511
47	43
48	254
49	20
50	18
51	39
52	124
53	17
54	54
55	251
56	118
57	111
58	239
59	53
60	94
61	191
62	51
63	24
64	56

cp's OEIS Frontend

A243343 a(1)=1; thereafter, if n is the k-th squarefree number (i.e., n = A005117(k)), a(n) = 1 + (2*a(k-1)); otherwise, when n is k-th nonsquarefree number (i.e., n = A013929(k)), a(n) = 2*a(k).

Table of values

List of values

A243343 a(1)=1; thereafter, if n is the k-th squarefree number (i.e., n = A005117(k)), a(n) = 1 + (2a(k-1)); otherwise, when n is k-th nonsquarefree number (i.e., n = A013929(k)), a(n) = 2a(k).

n	a(n)
1	1
2	3
3	7
4	2
5	15
6	5
7	31
8	6
9	14
10	11
11	63
12	4
13	13
14	29
15	23
16	30
17	127
18	10
19	9
20	62
21	27
22	59
23	47
24	12
25	28
26	61
27	22
28	126
29	255
30	21
31	19
32	8
33	125
34	55
35	119
36	26
37	95
38	25
39	57
40	58
41	123
42	45
43	253
44	46
45	60
46	511
47	43
48	254
49	20
50	18
51	39
52	124
53	17
54	54
55	251
56	118
57	111
58	239
59	53
60	94
61	191
62	51
63	24
64	56