A326820 - cp's OEIS frontend

A326820 Irregular triangle read by rows; for n >= 0, the n-th row corresponds to the elements of the set {(n-k) OR k, k = 0..n}, in ascending order (where OR denotes the bitwise OR operator).

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

[0, 1, 1, 2, 3, 2, 3, 4, 3, 5, 3, 5, 6, 7, 4, 6, 7, 8, 5, 7, 9, 5, 6, 7, 9, 10, 7, 11, 6, 7, 10, 11, 12, 7, 11, 13, 7, 11, 13, 14, 15, 8, 12, 14, 15, 16, 9, 13, 15, 17, 9, 10, 13, 14, 15, 17, 18, 11, 15, 19, 10, 11, 12, 14, 15, 18, 19, 20, 11, 13, 15, 19, 21]

cp's OEIS Frontend

A326820 Irregular triangle read by rows; for n >= 0, the n-th row corresponds to the elements of the set {(n-k) OR k, k = 0..n}, in ascending order (where OR denotes the bitwise OR operator).

Table of values

List of values

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

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

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