A268444 - cp's OEIS frontend

A268444 a(n) = Product_{i=0..k}(n_i+1) where n = Sum_{i=0..k}n_i*4^i is the base-4 representation of n.

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

[1, 2, 3, 4, 2, 4, 6, 8, 3, 6, 9, 12, 4, 8, 12, 16, 2, 4, 6, 8, 4, 8, 12, 16, 6, 12, 18, 24, 8, 16, 24, 32, 3, 6, 9, 12, 6, 12, 18, 24, 9, 18, 27, 36, 12, 24, 36, 48, 4, 8, 12, 16, 8, 16, 24, 32, 12, 24, 36, 48, 16, 32, 48, 64, 2, 4, 6, 8, 4, 8, 12, 16, 6, 12, 18, 24]

cp's OEIS Frontend

A268444 a(n) = Product_{i=0..k}(n_i+1) where n = Sum_{i=0..k}n_i*4^i is the base-4 representation of n.

Table of values

List of values

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

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

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