A247889 - cp's OEIS frontend

A247889 Least number k > 0 such that digsum(n^k) = n, or 0 if no such k exists.

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

[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 3, 3, 0, 13, 0, 4, 0, 0, 4, 3, 3, 4, 0, 0, 7, 0, 0, 7, 5, 4, 0, 0, 0, 13, 0, 0, 7, 0, 6, 5, 0, 0, 0, 0, 0, 0, 7, 6, 0, 0, 0, 7, 0, 0, 0, 0, 8, 6, 0, 0, 0, 7, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 17, 9, 10, 0, 0, 10, 13, 0, 0, 0, 19, 14, 0, 0, 10, 0, 0, 10, 11, 0, 0]

cp's OEIS Frontend

A247889 Least number k > 0 such that digsum(n^k) = n, or 0 if no such k exists.

Table of values

List of values

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

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

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