A139601 - cp's OEIS frontend

A139601 Square array of polygonal numbers read by ascending antidiagonals: T(n, k) = (n + 1)(k - 1)k/2 + k.

n	a(n)
0	0
1	0
2	1
3	0
4	1
5	3
6	0
7	1
8	4
9	6
10	0
11	1
12	5
13	9
14	10
15	0
16	1
17	6
18	12
19	16
20	15
21	0
22	1
23	7
24	15
25	22
26	25
27	21
28	0
29	1
30	8
31	18
32	28
33	35
34	36
35	28
36	0
37	1
38	9
39	21
40	34
41	45
42	51
43	49
44	36
45	0
46	1
47	10
48	24
49	40
50	55
51	66
52	70
53	64
54	45
55	0
56	1
57	11
58	27
59	46
60	65
61	81
62	91
63	92
64	81
65	55
66	0
67	1
68	12
69	30
70	52
71	75
72	96
73	112
74	120
75	117
76	100
77	66

[0, 0, 1, 0, 1, 3, 0, 1, 4, 6, 0, 1, 5, 9, 10, 0, 1, 6, 12, 16, 15, 0, 1, 7, 15, 22, 25, 21, 0, 1, 8, 18, 28, 35, 36, 28, 0, 1, 9, 21, 34, 45, 51, 49, 36, 0, 1, 10, 24, 40, 55, 66, 70, 64, 45, 0, 1, 11, 27, 46, 65, 81, 91, 92, 81, 55, 0, 1, 12, 30, 52, 75, 96, 112, 120, 117, 100, 66]

cp's OEIS Frontend

A139601 Square array of polygonal numbers read by ascending antidiagonals: T(n, k) = (n + 1)(k - 1)k/2 + k.

Table of values

List of values

n	a(n)
0	0
1	0
2	1
3	0
4	1
5	3
6	0
7	1
8	4
9	6
10	0
11	1
12	5
13	9
14	10
15	0
16	1
17	6
18	12
19	16
20	15
21	0
22	1
23	7
24	15
25	22
26	25
27	21
28	0
29	1
30	8
31	18
32	28
33	35
34	36
35	28
36	0
37	1
38	9
39	21
40	34
41	45
42	51
43	49
44	36
45	0
46	1
47	10
48	24
49	40
50	55
51	66
52	70
53	64
54	45
55	0
56	1
57	11
58	27
59	46
60	65
61	81
62	91
63	92
64	81
65	55
66	0
67	1
68	12
69	30
70	52
71	75
72	96
73	112
74	120
75	117
76	100
77	66

n	a(n)
0	0
1	0
2	1
3	0
4	1
5	3
6	0
7	1
8	4
9	6
10	0
11	1
12	5
13	9
14	10
15	0
16	1
17	6
18	12
19	16
20	15
21	0
22	1
23	7
24	15
25	22
26	25
27	21
28	0
29	1
30	8
31	18
32	28
33	35
34	36
35	28
36	0
37	1
38	9
39	21
40	34
41	45
42	51
43	49
44	36
45	0
46	1
47	10
48	24
49	40
50	55
51	66
52	70
53	64
54	45
55	0
56	1
57	11
58	27
59	46
60	65
61	81
62	91
63	92
64	81
65	55
66	0
67	1
68	12
69	30
70	52
71	75
72	96
73	112
74	120
75	117
76	100
77	66

cp's OEIS Frontend

A139601 Square array of polygonal numbers read by ascending antidiagonals: T(n, k) = (n + 1)*(k - 1)*k/2 + k.

Table of values

List of values

A139601 Square array of polygonal numbers read by ascending antidiagonals: T(n, k) = (n + 1)(k - 1)k/2 + k.

n	a(n)
0	0
1	0
2	1
3	0
4	1
5	3
6	0
7	1
8	4
9	6
10	0
11	1
12	5
13	9
14	10
15	0
16	1
17	6
18	12
19	16
20	15
21	0
22	1
23	7
24	15
25	22
26	25
27	21
28	0
29	1
30	8
31	18
32	28
33	35
34	36
35	28
36	0
37	1
38	9
39	21
40	34
41	45
42	51
43	49
44	36
45	0
46	1
47	10
48	24
49	40
50	55
51	66
52	70
53	64
54	45
55	0
56	1
57	11
58	27
59	46
60	65
61	81
62	91
63	92
64	81
65	55
66	0
67	1
68	12
69	30
70	52
71	75
72	96
73	112
74	120
75	117
76	100
77	66