A357756 - cp's OEIS frontend

A357756 a(n) is the least k > 0 such that A007953(nk) equals A007953((nk)^2), where A007953 is the sum of the digits.

n	a(n)
0	1
1	1
2	5
3	3
4	25
5	2
6	3
7	27
8	62
9	1
10	1
11	5
12	15
13	27
14	128
15	3
16	31
17	17
18	1
19	1
20	5
21	9
22	9
23	2
24	75
25	4
26	18
27	7
28	64
29	5
30	3
31	16
32	56
33	3
34	85
35	17
36	5
37	27
38	5
39	9
40	25
41	9
42	45
43	13
44	27
45	1
46	1
47	27
48	66
49	54
50	2
51	9
52	9
53	18
54	22
55	1
56	32
57	15
58	25
59	135
60	3
61	18
62	8
63	3
64	28
65	9
66	3
67	43
68	47
69	72
70	27
71	8
72	25
73	126
74	27

[1, 1, 5, 3, 25, 2, 3, 27, 62, 1, 1, 5, 15, 27, 128, 3, 31, 17, 1, 1, 5, 9, 9, 2, 75, 4, 18, 7, 64, 5, 3, 16, 56, 3, 85, 17, 5, 27, 5, 9, 25, 9, 45, 13, 27, 1, 1, 27, 66, 54, 2, 9, 9, 18, 22, 1, 32, 15, 25, 135, 3, 18, 8, 3, 28, 9, 3, 43, 47, 72, 27, 8, 25, 126, 27]

cp's OEIS Frontend

A357756 a(n) is the least k > 0 such that A007953(nk) equals A007953((nk)^2), where A007953 is the sum of the digits.

Table of values

List of values

n	a(n)
0	1
1	1
2	5
3	3
4	25
5	2
6	3
7	27
8	62
9	1
10	1
11	5
12	15
13	27
14	128
15	3
16	31
17	17
18	1
19	1
20	5
21	9
22	9
23	2
24	75
25	4
26	18
27	7
28	64
29	5
30	3
31	16
32	56
33	3
34	85
35	17
36	5
37	27
38	5
39	9
40	25
41	9
42	45
43	13
44	27
45	1
46	1
47	27
48	66
49	54
50	2
51	9
52	9
53	18
54	22
55	1
56	32
57	15
58	25
59	135
60	3
61	18
62	8
63	3
64	28
65	9
66	3
67	43
68	47
69	72
70	27
71	8
72	25
73	126
74	27

n	a(n)
0	1
1	1
2	5
3	3
4	25
5	2
6	3
7	27
8	62
9	1
10	1
11	5
12	15
13	27
14	128
15	3
16	31
17	17
18	1
19	1
20	5
21	9
22	9
23	2
24	75
25	4
26	18
27	7
28	64
29	5
30	3
31	16
32	56
33	3
34	85
35	17
36	5
37	27
38	5
39	9
40	25
41	9
42	45
43	13
44	27
45	1
46	1
47	27
48	66
49	54
50	2
51	9
52	9
53	18
54	22
55	1
56	32
57	15
58	25
59	135
60	3
61	18
62	8
63	3
64	28
65	9
66	3
67	43
68	47
69	72
70	27
71	8
72	25
73	126
74	27

cp's OEIS Frontend

A357756 a(n) is the least k > 0 such that A007953(n*k) equals A007953((n*k)^2), where A007953 is the sum of the digits.

Table of values

List of values

A357756 a(n) is the least k > 0 such that A007953(nk) equals A007953((nk)^2), where A007953 is the sum of the digits.

n	a(n)
0	1
1	1
2	5
3	3
4	25
5	2
6	3
7	27
8	62
9	1
10	1
11	5
12	15
13	27
14	128
15	3
16	31
17	17
18	1
19	1
20	5
21	9
22	9
23	2
24	75
25	4
26	18
27	7
28	64
29	5
30	3
31	16
32	56
33	3
34	85
35	17
36	5
37	27
38	5
39	9
40	25
41	9
42	45
43	13
44	27
45	1
46	1
47	27
48	66
49	54
50	2
51	9
52	9
53	18
54	22
55	1
56	32
57	15
58	25
59	135
60	3
61	18
62	8
63	3
64	28
65	9
66	3
67	43
68	47
69	72
70	27
71	8
72	25
73	126
74	27