A331781 - cp's OEIS frontend

A331781 Triangle read by rows: T(m,n) = Sum_{0 where m >= n >= 1.

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

[0, 0, 1, 0, 2, 3, 0, 3, 5, 7, 0, 4, 6, 9, 11, 0, 5, 8, 12, 15, 19, 0, 6, 9, 13, 16, 21, 23, 0, 7, 11, 16, 20, 26, 29, 35, 0, 8, 12, 18, 22, 29, 32, 39, 43, 0, 9, 14, 20, 25, 33, 36, 44, 49, 55, 0, 10, 15, 22, 27, 35, 38, 47, 52, 59, 63, 0, 11, 17, 25, 31, 40, 44, 54, 60, 68, 73, 83]

cp's OEIS Frontend

A331781 Triangle read by rows: T(m,n) = Sum_{0 where m >= n >= 1.

Table of values

List of values

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

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

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