A086271 - cp's OEIS frontend

A086271 Rectangular array T(n,k) of polygonal numbers, by descending antidiagonals.

n	a(n)
1	1
2	1
3	3
4	1
5	4
6	6
7	1
8	5
9	9
10	10
11	1
12	6
13	12
14	16
15	15
16	1
17	7
18	15
19	22
20	25
21	21
22	1
23	8
24	18
25	28
26	35
27	36
28	28
29	1
30	9
31	21
32	34
33	45
34	51
35	49
36	36
37	1
38	10
39	24
40	40
41	55
42	66
43	70
44	64
45	45
46	1
47	11
48	27
49	46
50	65
51	81
52	91
53	92
54	81
55	55
56	1
57	12
58	30
59	52
60	75
61	96
62	112
63	120
64	117
65	100
66	66
67	1
68	13
69	33
70	58
71	85
72	111
73	133
74	148
75	153
76	145
77	121
78	78

[1, 1, 3, 1, 4, 6, 1, 5, 9, 10, 1, 6, 12, 16, 15, 1, 7, 15, 22, 25, 21, 1, 8, 18, 28, 35, 36, 28, 1, 9, 21, 34, 45, 51, 49, 36, 1, 10, 24, 40, 55, 66, 70, 64, 45, 1, 11, 27, 46, 65, 81, 91, 92, 81, 55, 1, 12, 30, 52, 75, 96, 112, 120, 117, 100, 66, 1, 13, 33, 58, 85, 111, 133, 148, 153, 145, 121, 78]

cp's OEIS Frontend

A086271 Rectangular array T(n,k) of polygonal numbers, by descending antidiagonals.

Table of values

List of values

n	a(n)
1	1
2	1
3	3
4	1
5	4
6	6
7	1
8	5
9	9
10	10
11	1
12	6
13	12
14	16
15	15
16	1
17	7
18	15
19	22
20	25
21	21
22	1
23	8
24	18
25	28
26	35
27	36
28	28
29	1
30	9
31	21
32	34
33	45
34	51
35	49
36	36
37	1
38	10
39	24
40	40
41	55
42	66
43	70
44	64
45	45
46	1
47	11
48	27
49	46
50	65
51	81
52	91
53	92
54	81
55	55
56	1
57	12
58	30
59	52
60	75
61	96
62	112
63	120
64	117
65	100
66	66
67	1
68	13
69	33
70	58
71	85
72	111
73	133
74	148
75	153
76	145
77	121
78	78

n	a(n)
1	1
2	1
3	3
4	1
5	4
6	6
7	1
8	5
9	9
10	10
11	1
12	6
13	12
14	16
15	15
16	1
17	7
18	15
19	22
20	25
21	21
22	1
23	8
24	18
25	28
26	35
27	36
28	28
29	1
30	9
31	21
32	34
33	45
34	51
35	49
36	36
37	1
38	10
39	24
40	40
41	55
42	66
43	70
44	64
45	45
46	1
47	11
48	27
49	46
50	65
51	81
52	91
53	92
54	81
55	55
56	1
57	12
58	30
59	52
60	75
61	96
62	112
63	120
64	117
65	100
66	66
67	1
68	13
69	33
70	58
71	85
72	111
73	133
74	148
75	153
76	145
77	121
78	78

n	a(n)
1	1
2	1
3	3
4	1
5	4
6	6
7	1
8	5
9	9
10	10
11	1
12	6
13	12
14	16
15	15
16	1
17	7
18	15
19	22
20	25
21	21
22	1
23	8
24	18
25	28
26	35
27	36
28	28
29	1
30	9
31	21
32	34
33	45
34	51
35	49
36	36
37	1
38	10
39	24
40	40
41	55
42	66
43	70
44	64
45	45
46	1
47	11
48	27
49	46
50	65
51	81
52	91
53	92
54	81
55	55
56	1
57	12
58	30
59	52
60	75
61	96
62	112
63	120
64	117
65	100
66	66
67	1
68	13
69	33
70	58
71	85
72	111
73	133
74	148
75	153
76	145
77	121
78	78