A272026 - cp's OEIS frontend

A272026 Triangle read by rows: T(n,k), n>=1, k>=1, in which column k lists the numbers A016945 interleaved with k-1 zeros, and the first element of column k is in row k(k+1)/2.

n	a(n)
1	3
2	9
3	15
4	3
5	21
6	0
7	27
8	9
9	33
10	0
11	3
12	39
13	15
14	0
15	45
16	0
17	0
18	51
19	21
20	9
21	57
22	0
23	0
24	3
25	63
26	27
27	0
28	0
29	69
30	0
31	15
32	0
33	75
34	33
35	0
36	0
37	81
38	0
39	0
40	9
41	87
42	39
43	21
44	0
45	3
46	93
47	0
48	0
49	0
50	0
51	99
52	45
53	0
54	0
55	0
56	105
57	0
58	27
59	15
60	0
61	111
62	51
63	0
64	0
65	0
66	117
67	0
68	0
69	0
70	9
71	123
72	57
73	33
74	0
75	0
76	3
77	129
78	0
79	0
80	21
81	0
82	0
83	135
84	63
85	0
86	0
87	0
88	0
89	141
90	0
91	39
92	0
93	0
94	0

[3, 9, 15, 3, 21, 0, 27, 9, 33, 0, 3, 39, 15, 0, 45, 0, 0, 51, 21, 9, 57, 0, 0, 3, 63, 27, 0, 0, 69, 0, 15, 0, 75, 33, 0, 0, 81, 0, 0, 9, 87, 39, 21, 0, 3, 93, 0, 0, 0, 0, 99, 45, 0, 0, 0, 105, 0, 27, 15, 0, 111, 51, 0, 0, 0, 117, 0, 0, 0, 9, 123, 57, 33, 0, 0, 3, 129, 0, 0, 21, 0, 0, 135, 63, 0, 0, 0, 0, 141, 0, 39, 0, 0, 0]

cp's OEIS Frontend

A272026 Triangle read by rows: T(n,k), n>=1, k>=1, in which column k lists the numbers A016945 interleaved with k-1 zeros, and the first element of column k is in row k(k+1)/2.

Table of values

List of values

n	a(n)
1	3
2	9
3	15
4	3
5	21
6	0
7	27
8	9
9	33
10	0
11	3
12	39
13	15
14	0
15	45
16	0
17	0
18	51
19	21
20	9
21	57
22	0
23	0
24	3
25	63
26	27
27	0
28	0
29	69
30	0
31	15
32	0
33	75
34	33
35	0
36	0
37	81
38	0
39	0
40	9
41	87
42	39
43	21
44	0
45	3
46	93
47	0
48	0
49	0
50	0
51	99
52	45
53	0
54	0
55	0
56	105
57	0
58	27
59	15
60	0
61	111
62	51
63	0
64	0
65	0
66	117
67	0
68	0
69	0
70	9
71	123
72	57
73	33
74	0
75	0
76	3
77	129
78	0
79	0
80	21
81	0
82	0
83	135
84	63
85	0
86	0
87	0
88	0
89	141
90	0
91	39
92	0
93	0
94	0

n	a(n)
1	3
2	9
3	15
4	3
5	21
6	0
7	27
8	9
9	33
10	0
11	3
12	39
13	15
14	0
15	45
16	0
17	0
18	51
19	21
20	9
21	57
22	0
23	0
24	3
25	63
26	27
27	0
28	0
29	69
30	0
31	15
32	0
33	75
34	33
35	0
36	0
37	81
38	0
39	0
40	9
41	87
42	39
43	21
44	0
45	3
46	93
47	0
48	0
49	0
50	0
51	99
52	45
53	0
54	0
55	0
56	105
57	0
58	27
59	15
60	0
61	111
62	51
63	0
64	0
65	0
66	117
67	0
68	0
69	0
70	9
71	123
72	57
73	33
74	0
75	0
76	3
77	129
78	0
79	0
80	21
81	0
82	0
83	135
84	63
85	0
86	0
87	0
88	0
89	141
90	0
91	39
92	0
93	0
94	0

n	a(n)
1	3
2	9
3	15
4	3
5	21
6	0
7	27
8	9
9	33
10	0
11	3
12	39
13	15
14	0
15	45
16	0
17	0
18	51
19	21
20	9
21	57
22	0
23	0
24	3
25	63
26	27
27	0
28	0
29	69
30	0
31	15
32	0
33	75
34	33
35	0
36	0
37	81
38	0
39	0
40	9
41	87
42	39
43	21
44	0
45	3
46	93
47	0
48	0
49	0
50	0
51	99
52	45
53	0
54	0
55	0
56	105
57	0
58	27
59	15
60	0
61	111
62	51
63	0
64	0
65	0
66	117
67	0
68	0
69	0
70	9
71	123
72	57
73	33
74	0
75	0
76	3
77	129
78	0
79	0
80	21
81	0
82	0
83	135
84	63
85	0
86	0
87	0
88	0
89	141
90	0
91	39
92	0
93	0
94	0