A069912 - cp's OEIS frontend

A069912 a(n) = A067552(n)/9 where A067552(n) = SumOfDigits(n)^2 - SumOfDigits(n^2), with SumOfDigits = A007953.

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

[0, 0, 0, 0, 1, 2, 3, 4, 6, 8, 0, 0, 0, 0, 1, 3, 4, 5, 8, 10, 0, 0, 0, 1, 2, 4, 5, 7, 9, 12, 0, 0, 2, 2, 4, 6, 7, 9, 12, 15, 1, 1, 2, 3, 5, 8, 10, 12, 15, 18, 2, 3, 4, 5, 7, 10, 12, 14, 17, 20, 3, 4, 5, 6, 9, 12, 14, 16, 20, 23, 4, 6, 7, 9, 11, 14, 16, 19, 23, 27, 6, 7, 9, 10, 14, 17, 19, 22, 26, 30]

cp's OEIS Frontend

A069912 a(n) = A067552(n)/9 where A067552(n) = SumOfDigits(n)^2 - SumOfDigits(n^2), with SumOfDigits = A007953.

Table of values

List of values

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

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

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