A086273 - cp's OEIS frontend

A086273 Rectangular array T(n,k) of central polygonal numbers, by antidiagonals.

n	a(n)
1	1
2	1
3	3
4	1
5	4
6	7
7	1
8	5
9	10
10	13
11	1
12	6
13	13
14	19
15	21
16	1
17	7
18	16
19	25
20	31
21	31
22	1
23	8
24	19
25	31
26	41
27	46
28	43
29	1
30	9
31	22
32	37
33	51
34	61
35	64
36	57
37	1
38	10
39	25
40	43
41	61
42	76
43	85
44	85
45	73
46	1
47	11
48	28
49	49
50	71
51	91
52	106
53	113
54	109
55	91
56	1
57	12
58	31
59	55
60	81
61	106
62	127
63	141
64	145
65	136
66	111
67	1
68	13
69	34
70	61
71	91
72	121
73	148

[1, 1, 3, 1, 4, 7, 1, 5, 10, 13, 1, 6, 13, 19, 21, 1, 7, 16, 25, 31, 31, 1, 8, 19, 31, 41, 46, 43, 1, 9, 22, 37, 51, 61, 64, 57, 1, 10, 25, 43, 61, 76, 85, 85, 73, 1, 11, 28, 49, 71, 91, 106, 113, 109, 91, 1, 12, 31, 55, 81, 106, 127, 141, 145, 136, 111, 1, 13, 34, 61, 91, 121, 148]

cp's OEIS Frontend

A086273 Rectangular array T(n,k) of central polygonal numbers, by antidiagonals.

Table of values

List of values

n	a(n)
1	1
2	1
3	3
4	1
5	4
6	7
7	1
8	5
9	10
10	13
11	1
12	6
13	13
14	19
15	21
16	1
17	7
18	16
19	25
20	31
21	31
22	1
23	8
24	19
25	31
26	41
27	46
28	43
29	1
30	9
31	22
32	37
33	51
34	61
35	64
36	57
37	1
38	10
39	25
40	43
41	61
42	76
43	85
44	85
45	73
46	1
47	11
48	28
49	49
50	71
51	91
52	106
53	113
54	109
55	91
56	1
57	12
58	31
59	55
60	81
61	106
62	127
63	141
64	145
65	136
66	111
67	1
68	13
69	34
70	61
71	91
72	121
73	148

n	a(n)
1	1
2	1
3	3
4	1
5	4
6	7
7	1
8	5
9	10
10	13
11	1
12	6
13	13
14	19
15	21
16	1
17	7
18	16
19	25
20	31
21	31
22	1
23	8
24	19
25	31
26	41
27	46
28	43
29	1
30	9
31	22
32	37
33	51
34	61
35	64
36	57
37	1
38	10
39	25
40	43
41	61
42	76
43	85
44	85
45	73
46	1
47	11
48	28
49	49
50	71
51	91
52	106
53	113
54	109
55	91
56	1
57	12
58	31
59	55
60	81
61	106
62	127
63	141
64	145
65	136
66	111
67	1
68	13
69	34
70	61
71	91
72	121
73	148

n	a(n)
1	1
2	1
3	3
4	1
5	4
6	7
7	1
8	5
9	10
10	13
11	1
12	6
13	13
14	19
15	21
16	1
17	7
18	16
19	25
20	31
21	31
22	1
23	8
24	19
25	31
26	41
27	46
28	43
29	1
30	9
31	22
32	37
33	51
34	61
35	64
36	57
37	1
38	10
39	25
40	43
41	61
42	76
43	85
44	85
45	73
46	1
47	11
48	28
49	49
50	71
51	91
52	106
53	113
54	109
55	91
56	1
57	12
58	31
59	55
60	81
61	106
62	127
63	141
64	145
65	136
66	111
67	1
68	13
69	34
70	61
71	91
72	121
73	148