A227361 - cp's OEIS frontend

A227361 If n is even, then a(n) = n + bitsum(n), else a(n) = n - bitsum(n), where bitsum(n) is the count of binary 1's in n, A000120.

n	a(n)
0	0
1	0
2	3
3	1
4	5
5	3
6	8
7	4
8	9
9	7
10	12
11	8
12	14
13	10
14	17
15	11
16	17
17	15
18	20
19	16
20	22
21	18
22	25
23	19
24	26
25	22
26	29
27	23
28	31
29	25
30	34
31	26
32	33
33	31
34	36
35	32
36	38
37	34
38	41
39	35
40	42
41	38
42	45
43	39
44	47
45	41
46	50
47	42
48	50
49	46
50	53
51	47
52	55
53	49
54	58
55	50
56	59
57	53
58	62
59	54
60	64
61	56
62	67
63	57
64	65
65	63
66	68
67	64
68	70
69	66
70	73
71	67
72	74
73	70
74	77
75	71
76	79
77	73
78	82
79	74
80	82
81	78
82	85
83	79
84	87
85	81
86	90
87	82
88	91
89	85

[0, 0, 3, 1, 5, 3, 8, 4, 9, 7, 12, 8, 14, 10, 17, 11, 17, 15, 20, 16, 22, 18, 25, 19, 26, 22, 29, 23, 31, 25, 34, 26, 33, 31, 36, 32, 38, 34, 41, 35, 42, 38, 45, 39, 47, 41, 50, 42, 50, 46, 53, 47, 55, 49, 58, 50, 59, 53, 62, 54, 64, 56, 67, 57, 65, 63, 68, 64, 70, 66, 73, 67, 74, 70, 77, 71, 79, 73, 82, 74, 82, 78, 85, 79, 87, 81, 90, 82, 91, 85]

cp's OEIS Frontend

A227361 If n is even, then a(n) = n + bitsum(n), else a(n) = n - bitsum(n), where bitsum(n) is the count of binary 1's in n, A000120.

Table of values

List of values

n	a(n)
0	0
1	0
2	3
3	1
4	5
5	3
6	8
7	4
8	9
9	7
10	12
11	8
12	14
13	10
14	17
15	11
16	17
17	15
18	20
19	16
20	22
21	18
22	25
23	19
24	26
25	22
26	29
27	23
28	31
29	25
30	34
31	26
32	33
33	31
34	36
35	32
36	38
37	34
38	41
39	35
40	42
41	38
42	45
43	39
44	47
45	41
46	50
47	42
48	50
49	46
50	53
51	47
52	55
53	49
54	58
55	50
56	59
57	53
58	62
59	54
60	64
61	56
62	67
63	57
64	65
65	63
66	68
67	64
68	70
69	66
70	73
71	67
72	74
73	70
74	77
75	71
76	79
77	73
78	82
79	74
80	82
81	78
82	85
83	79
84	87
85	81
86	90
87	82
88	91
89	85

n	a(n)
0	0
1	0
2	3
3	1
4	5
5	3
6	8
7	4
8	9
9	7
10	12
11	8
12	14
13	10
14	17
15	11
16	17
17	15
18	20
19	16
20	22
21	18
22	25
23	19
24	26
25	22
26	29
27	23
28	31
29	25
30	34
31	26
32	33
33	31
34	36
35	32
36	38
37	34
38	41
39	35
40	42
41	38
42	45
43	39
44	47
45	41
46	50
47	42
48	50
49	46
50	53
51	47
52	55
53	49
54	58
55	50
56	59
57	53
58	62
59	54
60	64
61	56
62	67
63	57
64	65
65	63
66	68
67	64
68	70
69	66
70	73
71	67
72	74
73	70
74	77
75	71
76	79
77	73
78	82
79	74
80	82
81	78
82	85
83	79
84	87
85	81
86	90
87	82
88	91
89	85

n	a(n)
0	0
1	0
2	3
3	1
4	5
5	3
6	8
7	4
8	9
9	7
10	12
11	8
12	14
13	10
14	17
15	11
16	17
17	15
18	20
19	16
20	22
21	18
22	25
23	19
24	26
25	22
26	29
27	23
28	31
29	25
30	34
31	26
32	33
33	31
34	36
35	32
36	38
37	34
38	41
39	35
40	42
41	38
42	45
43	39
44	47
45	41
46	50
47	42
48	50
49	46
50	53
51	47
52	55
53	49
54	58
55	50
56	59
57	53
58	62
59	54
60	64
61	56
62	67
63	57
64	65
65	63
66	68
67	64
68	70
69	66
70	73
71	67
72	74
73	70
74	77
75	71
76	79
77	73
78	82
79	74
80	82
81	78
82	85
83	79
84	87
85	81
86	90
87	82
88	91
89	85