A084890 - cp's OEIS frontend

A084890 Triangular array, read by rows: T(n,k) = arithmetic derivative of n*k, 1<=k<=n.

n	a(n)
1	0
2	1
3	4
4	1
5	5
6	6
7	4
8	12
9	16
10	32
11	1
12	7
13	8
14	24
15	10
16	5
17	16
18	21
19	44
20	31
21	60
22	1
23	9
24	10
25	32
26	12
27	41
28	14
29	12
30	32
31	44
32	80
33	68
34	112
35	92
36	192
37	6
38	21
39	27
40	60
41	39
42	81
43	51
44	156
45	108
46	7
47	24
48	31
49	68
50	45
51	92
52	59
53	176
54	123
55	140
56	1
57	13
58	14
59	48
60	16
61	61
62	18
63	140
64	75
65	87
66	22
67	16
68	44
69	60
70	112
71	92
72	156
73	124
74	272
75	216
76	244
77	188
78	384

[0, 1, 4, 1, 5, 6, 4, 12, 16, 32, 1, 7, 8, 24, 10, 5, 16, 21, 44, 31, 60, 1, 9, 10, 32, 12, 41, 14, 12, 32, 44, 80, 68, 112, 92, 192, 6, 21, 27, 60, 39, 81, 51, 156, 108, 7, 24, 31, 68, 45, 92, 59, 176, 123, 140, 1, 13, 14, 48, 16, 61, 18, 140, 75, 87, 22, 16, 44, 60, 112, 92, 156, 124, 272, 216, 244, 188, 384]

cp's OEIS Frontend

A084890 Triangular array, read by rows: T(n,k) = arithmetic derivative of n*k, 1<=k<=n.

Table of values

List of values

n	a(n)
1	0
2	1
3	4
4	1
5	5
6	6
7	4
8	12
9	16
10	32
11	1
12	7
13	8
14	24
15	10
16	5
17	16
18	21
19	44
20	31
21	60
22	1
23	9
24	10
25	32
26	12
27	41
28	14
29	12
30	32
31	44
32	80
33	68
34	112
35	92
36	192
37	6
38	21
39	27
40	60
41	39
42	81
43	51
44	156
45	108
46	7
47	24
48	31
49	68
50	45
51	92
52	59
53	176
54	123
55	140
56	1
57	13
58	14
59	48
60	16
61	61
62	18
63	140
64	75
65	87
66	22
67	16
68	44
69	60
70	112
71	92
72	156
73	124
74	272
75	216
76	244
77	188
78	384

n	a(n)
1	0
2	1
3	4
4	1
5	5
6	6
7	4
8	12
9	16
10	32
11	1
12	7
13	8
14	24
15	10
16	5
17	16
18	21
19	44
20	31
21	60
22	1
23	9
24	10
25	32
26	12
27	41
28	14
29	12
30	32
31	44
32	80
33	68
34	112
35	92
36	192
37	6
38	21
39	27
40	60
41	39
42	81
43	51
44	156
45	108
46	7
47	24
48	31
49	68
50	45
51	92
52	59
53	176
54	123
55	140
56	1
57	13
58	14
59	48
60	16
61	61
62	18
63	140
64	75
65	87
66	22
67	16
68	44
69	60
70	112
71	92
72	156
73	124
74	272
75	216
76	244
77	188
78	384

n	a(n)
1	0
2	1
3	4
4	1
5	5
6	6
7	4
8	12
9	16
10	32
11	1
12	7
13	8
14	24
15	10
16	5
17	16
18	21
19	44
20	31
21	60
22	1
23	9
24	10
25	32
26	12
27	41
28	14
29	12
30	32
31	44
32	80
33	68
34	112
35	92
36	192
37	6
38	21
39	27
40	60
41	39
42	81
43	51
44	156
45	108
46	7
47	24
48	31
49	68
50	45
51	92
52	59
53	176
54	123
55	140
56	1
57	13
58	14
59	48
60	16
61	61
62	18
63	140
64	75
65	87
66	22
67	16
68	44
69	60
70	112
71	92
72	156
73	124
74	272
75	216
76	244
77	188
78	384