A335262 - cp's OEIS frontend

A335262 Triangle of triangular numbers, read by rows, constructed like this: Given a sequence t, start row 0 with t(0). Compute row n for n > 0 by reversing row n-1 and prepending t(n). The sequence t is here chosen as the triangular numbers.

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

[0, 1, 0, 3, 0, 1, 6, 1, 0, 3, 10, 3, 0, 1, 6, 15, 6, 1, 0, 3, 10, 21, 10, 3, 0, 1, 6, 15, 28, 15, 6, 1, 0, 3, 10, 21, 36, 21, 10, 3, 0, 1, 6, 15, 28, 45, 28, 15, 6, 1, 0, 3, 10, 21, 36, 55, 36, 21, 10, 3, 0, 1, 6, 15, 28, 45, 66, 45, 28, 15, 6, 1, 0, 3, 10, 21, 36, 55]

cp's OEIS Frontend

A335262 Triangle of triangular numbers, read by rows, constructed like this: Given a sequence t, start row 0 with t(0). Compute row n for n > 0 by reversing row n-1 and prepending t(n). The sequence t is here chosen as the triangular numbers.

Table of values

List of values

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

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

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