A257849 - cp's OEIS frontend

A257849 a(n) = floor(n/9) * (n mod 9).

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

[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 0, 2, 4, 6, 8, 10, 12, 14, 16, 0, 3, 6, 9, 12, 15, 18, 21, 24, 0, 4, 8, 12, 16, 20, 24, 28, 32, 0, 5, 10, 15, 20, 25, 30, 35, 40, 0, 6, 12, 18, 24, 30, 36, 42, 48, 0, 7, 14, 21, 28, 35, 42, 49, 56, 0, 8, 16, 24, 32, 40, 48, 56, 64, 0]

cp's OEIS Frontend

A257849 a(n) = floor(n/9) * (n mod 9).

Table of values

List of values

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

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

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