A049780 - cp's OEIS frontend

A049780 Array T, read by descending antidiagonals: T(n, k) = k(2n + k + 1)/2 for n, k >= 0.

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

[0, 1, 0, 3, 2, 0, 6, 5, 3, 0, 10, 9, 7, 4, 0, 15, 14, 12, 9, 5, 0, 21, 20, 18, 15, 11, 6, 0, 28, 27, 25, 22, 18, 13, 7, 0, 36, 35, 33, 30, 26, 21, 15, 8, 0, 45, 44, 42, 39, 35, 30, 24, 17, 9, 0, 55, 54, 52, 49, 45, 40, 34, 27, 19, 10, 0, 66, 65, 63, 60, 56, 51, 45, 38, 30, 21, 11, 0]

cp's OEIS Frontend

A049780 Array T, read by descending antidiagonals: T(n, k) = k(2n + k + 1)/2 for n, k >= 0.

Table of values

List of values

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

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

cp's OEIS Frontend

A049780 Array T, read by descending antidiagonals: T(n, k) = k*(2*n + k + 1)/2 for n, k >= 0.

Table of values

List of values

A049780 Array T, read by descending antidiagonals: T(n, k) = k(2n + k + 1)/2 for n, k >= 0.

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