A235794 - cp's OEIS frontend

A235794 Triangle read by rows: T(n,k), n>=1, k>=1, in which column k starts with k zeros and then lists the odd numbers interleaved with k zeros, and the first element of column k is in row k(k+1)/2.

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

[0, 1, 0, 0, 3, 0, 0, 1, 5, 0, 0, 0, 0, 0, 7, 3, 0, 0, 0, 1, 9, 0, 0, 0, 0, 5, 0, 0, 11, 0, 0, 0, 0, 0, 3, 0, 13, 7, 0, 1, 0, 0, 0, 0, 0, 15, 0, 0, 0, 0, 0, 9, 5, 0, 0, 17, 0, 0, 0, 0, 0, 0, 0, 3, 0, 19, 11, 0, 0, 1, 0, 0, 7, 0, 0, 0, 21, 0, 0, 0, 0, 0, 0]

cp's OEIS Frontend

A235794 Triangle read by rows: T(n,k), n>=1, k>=1, in which column k starts with k zeros and then lists the odd numbers interleaved with k 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	0
2	1
3	0
4	0
5	3
6	0
7	0
8	1
9	5
10	0
11	0
12	0
13	0
14	0
15	7
16	3
17	0
18	0
19	0
20	1
21	9
22	0
23	0
24	0
25	0
26	5
27	0
28	0
29	11
30	0
31	0
32	0
33	0
34	0
35	3
36	0
37	13
38	7
39	0
40	1
41	0
42	0
43	0
44	0
45	0
46	15
47	0
48	0
49	0
50	0
51	0
52	9
53	5
54	0
55	0
56	17
57	0
58	0
59	0
60	0
61	0
62	0
63	0
64	3
65	0
66	19
67	11
68	0
69	0
70	1
71	0
72	0
73	7
74	0
75	0
76	0
77	21
78	0
79	0
80	0
81	0
82	0
83	0

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

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