A279048 - cp's OEIS frontend

A279048 a(n) = 0 whenever n is a practical number (A005153) otherwise least powers of 2 that when multiplied by n becomes practical.

n	a(n)
1	0
2	0
3	1
4	0
5	2
6	0
7	2
8	0
9	1
10	1
11	3
12	0
13	3
14	1
15	1
16	0
17	4
18	0
19	4
20	0
21	1
22	2
23	4
24	0
25	2
26	2
27	1
28	0
29	4
30	0
31	4
32	0
33	1
34	3
35	2
36	0
37	5
38	3
39	1
40	0
41	5
42	0
43	5
44	1
45	1
46	3
47	5
48	0
49	2
50	1
51	2
52	1
53	5
54	0
55	2
56	0
57	2
58	3
59	5
60	0
61	5
62	3
63	1
64	0
65	2
66	0
67	6
68	2
69	2
70	1
71	6
72	0
73	6
74	4
75	1
76	2
77	2
78	0
79	6
80	0
81	1
82	4
83	6
84	0
85	2
86	4
87	2
88	0
89	6
90	0
91	2
92	2
93	3
94	4
95	2
96	0
97	6
98	1
99	1
100	0

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

cp's OEIS Frontend

A279048 a(n) = 0 whenever n is a practical number (A005153) otherwise least powers of 2 that when multiplied by n becomes practical.

Table of values

List of values

n	a(n)
1	0
2	0
3	1
4	0
5	2
6	0
7	2
8	0
9	1
10	1
11	3
12	0
13	3
14	1
15	1
16	0
17	4
18	0
19	4
20	0
21	1
22	2
23	4
24	0
25	2
26	2
27	1
28	0
29	4
30	0
31	4
32	0
33	1
34	3
35	2
36	0
37	5
38	3
39	1
40	0
41	5
42	0
43	5
44	1
45	1
46	3
47	5
48	0
49	2
50	1
51	2
52	1
53	5
54	0
55	2
56	0
57	2
58	3
59	5
60	0
61	5
62	3
63	1
64	0
65	2
66	0
67	6
68	2
69	2
70	1
71	6
72	0
73	6
74	4
75	1
76	2
77	2
78	0
79	6
80	0
81	1
82	4
83	6
84	0
85	2
86	4
87	2
88	0
89	6
90	0
91	2
92	2
93	3
94	4
95	2
96	0
97	6
98	1
99	1
100	0

n	a(n)
1	0
2	0
3	1
4	0
5	2
6	0
7	2
8	0
9	1
10	1
11	3
12	0
13	3
14	1
15	1
16	0
17	4
18	0
19	4
20	0
21	1
22	2
23	4
24	0
25	2
26	2
27	1
28	0
29	4
30	0
31	4
32	0
33	1
34	3
35	2
36	0
37	5
38	3
39	1
40	0
41	5
42	0
43	5
44	1
45	1
46	3
47	5
48	0
49	2
50	1
51	2
52	1
53	5
54	0
55	2
56	0
57	2
58	3
59	5
60	0
61	5
62	3
63	1
64	0
65	2
66	0
67	6
68	2
69	2
70	1
71	6
72	0
73	6
74	4
75	1
76	2
77	2
78	0
79	6
80	0
81	1
82	4
83	6
84	0
85	2
86	4
87	2
88	0
89	6
90	0
91	2
92	2
93	3
94	4
95	2
96	0
97	6
98	1
99	1
100	0

n	a(n)
1	0
2	0
3	1
4	0
5	2
6	0
7	2
8	0
9	1
10	1
11	3
12	0
13	3
14	1
15	1
16	0
17	4
18	0
19	4
20	0
21	1
22	2
23	4
24	0
25	2
26	2
27	1
28	0
29	4
30	0
31	4
32	0
33	1
34	3
35	2
36	0
37	5
38	3
39	1
40	0
41	5
42	0
43	5
44	1
45	1
46	3
47	5
48	0
49	2
50	1
51	2
52	1
53	5
54	0
55	2
56	0
57	2
58	3
59	5
60	0
61	5
62	3
63	1
64	0
65	2
66	0
67	6
68	2
69	2
70	1
71	6
72	0
73	6
74	4
75	1
76	2
77	2
78	0
79	6
80	0
81	1
82	4
83	6
84	0
85	2
86	4
87	2
88	0
89	6
90	0
91	2
92	2
93	3
94	4
95	2
96	0
97	6
98	1
99	1
100	0