A236540 - cp's OEIS frontend

A236540 Triangle read by rows: T(n,k), n>=1, k>=1, in which column k lists k copies of the positive squares in nondecreasing order, except the first column which lists the triangular numbers, and the first element of column k is in row k(k+1)/2.

n	a(n)
1	0
2	1
3	3
4	1
5	6
6	1
7	10
8	4
9	15
10	4
11	1
12	21
13	9
14	1
15	28
16	9
17	1
18	36
19	16
20	4
21	45
22	16
23	4
24	1
25	55
26	25
27	4
28	1
29	66
30	25
31	9
32	1
33	78
34	36
35	9
36	1
37	91
38	36
39	9
40	4
41	105
42	49
43	16
44	4
45	1
46	120
47	49
48	16
49	4
50	1
51	136
52	64
53	16
54	4
55	1
56	153
57	64
58	25
59	9
60	1
61	171
62	81
63	25
64	9
65	1
66	190
67	81
68	25
69	9
70	4
71	210
72	100
73	36
74	9
75	4
76	1

[0, 1, 3, 1, 6, 1, 10, 4, 15, 4, 1, 21, 9, 1, 28, 9, 1, 36, 16, 4, 45, 16, 4, 1, 55, 25, 4, 1, 66, 25, 9, 1, 78, 36, 9, 1, 91, 36, 9, 4, 105, 49, 16, 4, 1, 120, 49, 16, 4, 1, 136, 64, 16, 4, 1, 153, 64, 25, 9, 1, 171, 81, 25, 9, 1, 190, 81, 25, 9, 4, 210, 100, 36, 9, 4, 1]

cp's OEIS Frontend

A236540 Triangle read by rows: T(n,k), n>=1, k>=1, in which column k lists k copies of the positive squares in nondecreasing order, except the first column which lists the triangular numbers, and the first element of column k is in row k(k+1)/2.

Table of values

List of values

n	a(n)
1	0
2	1
3	3
4	1
5	6
6	1
7	10
8	4
9	15
10	4
11	1
12	21
13	9
14	1
15	28
16	9
17	1
18	36
19	16
20	4
21	45
22	16
23	4
24	1
25	55
26	25
27	4
28	1
29	66
30	25
31	9
32	1
33	78
34	36
35	9
36	1
37	91
38	36
39	9
40	4
41	105
42	49
43	16
44	4
45	1
46	120
47	49
48	16
49	4
50	1
51	136
52	64
53	16
54	4
55	1
56	153
57	64
58	25
59	9
60	1
61	171
62	81
63	25
64	9
65	1
66	190
67	81
68	25
69	9
70	4
71	210
72	100
73	36
74	9
75	4
76	1

n	a(n)
1	0
2	1
3	3
4	1
5	6
6	1
7	10
8	4
9	15
10	4
11	1
12	21
13	9
14	1
15	28
16	9
17	1
18	36
19	16
20	4
21	45
22	16
23	4
24	1
25	55
26	25
27	4
28	1
29	66
30	25
31	9
32	1
33	78
34	36
35	9
36	1
37	91
38	36
39	9
40	4
41	105
42	49
43	16
44	4
45	1
46	120
47	49
48	16
49	4
50	1
51	136
52	64
53	16
54	4
55	1
56	153
57	64
58	25
59	9
60	1
61	171
62	81
63	25
64	9
65	1
66	190
67	81
68	25
69	9
70	4
71	210
72	100
73	36
74	9
75	4
76	1

n	a(n)
1	0
2	1
3	3
4	1
5	6
6	1
7	10
8	4
9	15
10	4
11	1
12	21
13	9
14	1
15	28
16	9
17	1
18	36
19	16
20	4
21	45
22	16
23	4
24	1
25	55
26	25
27	4
28	1
29	66
30	25
31	9
32	1
33	78
34	36
35	9
36	1
37	91
38	36
39	9
40	4
41	105
42	49
43	16
44	4
45	1
46	120
47	49
48	16
49	4
50	1
51	136
52	64
53	16
54	4
55	1
56	153
57	64
58	25
59	9
60	1
61	171
62	81
63	25
64	9
65	1
66	190
67	81
68	25
69	9
70	4
71	210
72	100
73	36
74	9
75	4
76	1