A056888 - cp's OEIS frontend

A056888 a(n) = number of k such that sum of digits of 9^k is 9n.

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

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

cp's OEIS Frontend

A056888 a(n) = number of k such that sum of digits of 9^k is 9n.

Table of values

List of values

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

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

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