A127701 - cp's OEIS frontend

A127701 Infinite lower triangular matrix with (1, 2, 3, ...) in the main diagonal, (1, 1, 1, ...) in the subdiagonal and the rest zeros.

n	a(n)
1	1
2	1
3	2
4	0
5	1
6	3
7	0
8	0
9	1
10	4
11	0
12	0
13	0
14	1
15	5
16	0
17	0
18	0
19	0
20	1
21	6
22	0
23	0
24	0
25	0
26	0
27	1
28	7
29	0
30	0
31	0
32	0
33	0
34	0
35	1
36	8
37	0
38	0
39	0
40	0
41	0
42	0
43	0
44	1
45	9
46	0
47	0
48	0
49	0
50	0
51	0
52	0
53	0
54	1
55	10
56	0
57	0
58	0
59	0
60	0
61	0
62	0
63	0
64	0
65	1
66	11
67	0
68	0
69	0
70	0
71	0
72	0
73	0
74	0
75	0
76	0
77	1
78	12
79	0
80	0
81	0
82	0
83	0
84	0
85	0
86	0
87	0
88	0
89	0
90	1
91	13
92	0
93	0
94	0
95	0
96	0
97	0
98	0
99	0
100	0
101	0
102	0
103	0

[1, 1, 2, 0, 1, 3, 0, 0, 1, 4, 0, 0, 0, 1, 5, 0, 0, 0, 0, 1, 6, 0, 0, 0, 0, 0, 1, 7, 0, 0, 0, 0, 0, 0, 1, 8, 0, 0, 0, 0, 0, 0, 0, 1, 9, 0, 0, 0, 0, 0, 0, 0, 0, 1, 10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 11, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 12, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 13, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]

cp's OEIS Frontend

A127701 Infinite lower triangular matrix with (1, 2, 3, ...) in the main diagonal, (1, 1, 1, ...) in the subdiagonal and the rest zeros.

Table of values

List of values

n	a(n)
1	1
2	1
3	2
4	0
5	1
6	3
7	0
8	0
9	1
10	4
11	0
12	0
13	0
14	1
15	5
16	0
17	0
18	0
19	0
20	1
21	6
22	0
23	0
24	0
25	0
26	0
27	1
28	7
29	0
30	0
31	0
32	0
33	0
34	0
35	1
36	8
37	0
38	0
39	0
40	0
41	0
42	0
43	0
44	1
45	9
46	0
47	0
48	0
49	0
50	0
51	0
52	0
53	0
54	1
55	10
56	0
57	0
58	0
59	0
60	0
61	0
62	0
63	0
64	0
65	1
66	11
67	0
68	0
69	0
70	0
71	0
72	0
73	0
74	0
75	0
76	0
77	1
78	12
79	0
80	0
81	0
82	0
83	0
84	0
85	0
86	0
87	0
88	0
89	0
90	1
91	13
92	0
93	0
94	0
95	0
96	0
97	0
98	0
99	0
100	0
101	0
102	0
103	0

n	a(n)
1	1
2	1
3	2
4	0
5	1
6	3
7	0
8	0
9	1
10	4
11	0
12	0
13	0
14	1
15	5
16	0
17	0
18	0
19	0
20	1
21	6
22	0
23	0
24	0
25	0
26	0
27	1
28	7
29	0
30	0
31	0
32	0
33	0
34	0
35	1
36	8
37	0
38	0
39	0
40	0
41	0
42	0
43	0
44	1
45	9
46	0
47	0
48	0
49	0
50	0
51	0
52	0
53	0
54	1
55	10
56	0
57	0
58	0
59	0
60	0
61	0
62	0
63	0
64	0
65	1
66	11
67	0
68	0
69	0
70	0
71	0
72	0
73	0
74	0
75	0
76	0
77	1
78	12
79	0
80	0
81	0
82	0
83	0
84	0
85	0
86	0
87	0
88	0
89	0
90	1
91	13
92	0
93	0
94	0
95	0
96	0
97	0
98	0
99	0
100	0
101	0
102	0
103	0

n	a(n)
1	1
2	1
3	2
4	0
5	1
6	3
7	0
8	0
9	1
10	4
11	0
12	0
13	0
14	1
15	5
16	0
17	0
18	0
19	0
20	1
21	6
22	0
23	0
24	0
25	0
26	0
27	1
28	7
29	0
30	0
31	0
32	0
33	0
34	0
35	1
36	8
37	0
38	0
39	0
40	0
41	0
42	0
43	0
44	1
45	9
46	0
47	0
48	0
49	0
50	0
51	0
52	0
53	0
54	1
55	10
56	0
57	0
58	0
59	0
60	0
61	0
62	0
63	0
64	0
65	1
66	11
67	0
68	0
69	0
70	0
71	0
72	0
73	0
74	0
75	0
76	0
77	1
78	12
79	0
80	0
81	0
82	0
83	0
84	0
85	0
86	0
87	0
88	0
89	0
90	1
91	13
92	0
93	0
94	0
95	0
96	0
97	0
98	0
99	0
100	0
101	0
102	0
103	0