A037836 - cp's OEIS frontend

A037836 a(n) = Sum{|d(i)-d(i-1)|: i=1,...,m}, where Sum{d(i)*4^i: i=0,1,...,m} is the base 4 representation of n.

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

[0, 0, 0, 1, 0, 1, 2, 2, 1, 0, 1, 3, 2, 1, 0, 1, 2, 3, 4, 1, 0, 1, 2, 3, 2, 1, 2, 5, 4, 3, 2, 2, 3, 4, 5, 2, 1, 2, 3, 2, 1, 0, 1, 4, 3, 2, 1, 3, 4, 5, 6, 3, 2, 3, 4, 3, 2, 1, 2, 3, 2, 1, 0, 1, 2, 3, 4, 3, 2, 3, 4, 5, 4, 3, 4, 7, 6, 5, 4, 1, 2, 3, 4, 1, 0, 1, 2, 3, 2, 1]

cp's OEIS Frontend

A037836 a(n) = Sum{|d(i)-d(i-1)|: i=1,...,m}, where Sum{d(i)*4^i: i=0,1,...,m} is the base 4 representation of n.

Table of values

List of values

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

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

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