A343651 - cp's OEIS frontend

A343651 Irregular triangle T(n, k), n > 0, k = 1..A343650(n), read by rows; the n-th row lists the divisors d of n such that the product d * (n/d) can be computed without carries in binary.

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

[1, 1, 2, 1, 3, 1, 2, 4, 1, 5, 1, 2, 3, 6, 1, 7, 1, 2, 4, 8, 1, 9, 1, 2, 5, 10, 1, 11, 1, 2, 3, 4, 6, 12, 1, 13, 1, 2, 7, 14, 1, 3, 5, 15, 1, 2, 4, 8, 16, 1, 17, 1, 2, 9, 18, 1, 19, 1, 2, 4, 5, 10, 20, 1, 21, 1, 2, 11, 22, 1, 23, 1, 2, 3, 4, 6, 8, 12, 24, 1, 25]

cp's OEIS Frontend

A343651 Irregular triangle T(n, k), n > 0, k = 1..A343650(n), read by rows; the n-th row lists the divisors d of n such that the product d * (n/d) can be computed without carries in binary.

Table of values

List of values

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

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

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