A098172 - cp's OEIS frontend

A098172 Triangle T(n,k) with diagonals T(n,n-k) = binomial(n,3k).

n	a(n)
0	1
1	0
2	1
3	0
4	0
5	1
6	0
7	0
8	1
9	1
10	0
11	0
12	0
13	4
14	1
15	0
16	0
17	0
18	0
19	10
20	1
21	0
22	0
23	0
24	0
25	1
26	20
27	1
28	0
29	0
30	0
31	0
32	0
33	7
34	35
35	1
36	0
37	0
38	0
39	0
40	0
41	0
42	28
43	56
44	1
45	0
46	0
47	0
48	0
49	0
50	0
51	1
52	84
53	84
54	1
55	0
56	0
57	0
58	0
59	0
60	0
61	0
62	10
63	210
64	120
65	1
66	0
67	0
68	0
69	0
70	0
71	0
72	0
73	0
74	55
75	462
76	165
77	1
78	0
79	0
80	0
81	0
82	0
83	0
84	0
85	0
86	1
87	220
88	924
89	220
90	1

[1, 0, 1, 0, 0, 1, 0, 0, 1, 1, 0, 0, 0, 4, 1, 0, 0, 0, 0, 10, 1, 0, 0, 0, 0, 1, 20, 1, 0, 0, 0, 0, 0, 7, 35, 1, 0, 0, 0, 0, 0, 0, 28, 56, 1, 0, 0, 0, 0, 0, 0, 1, 84, 84, 1, 0, 0, 0, 0, 0, 0, 0, 10, 210, 120, 1, 0, 0, 0, 0, 0, 0, 0, 0, 55, 462, 165, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 220, 924, 220, 1]

cp's OEIS Frontend

A098172 Triangle T(n,k) with diagonals T(n,n-k) = binomial(n,3k).

Table of values

List of values

n	a(n)
0	1
1	0
2	1
3	0
4	0
5	1
6	0
7	0
8	1
9	1
10	0
11	0
12	0
13	4
14	1
15	0
16	0
17	0
18	0
19	10
20	1
21	0
22	0
23	0
24	0
25	1
26	20
27	1
28	0
29	0
30	0
31	0
32	0
33	7
34	35
35	1
36	0
37	0
38	0
39	0
40	0
41	0
42	28
43	56
44	1
45	0
46	0
47	0
48	0
49	0
50	0
51	1
52	84
53	84
54	1
55	0
56	0
57	0
58	0
59	0
60	0
61	0
62	10
63	210
64	120
65	1
66	0
67	0
68	0
69	0
70	0
71	0
72	0
73	0
74	55
75	462
76	165
77	1
78	0
79	0
80	0
81	0
82	0
83	0
84	0
85	0
86	1
87	220
88	924
89	220
90	1

n	a(n)
0	1
1	0
2	1
3	0
4	0
5	1
6	0
7	0
8	1
9	1
10	0
11	0
12	0
13	4
14	1
15	0
16	0
17	0
18	0
19	10
20	1
21	0
22	0
23	0
24	0
25	1
26	20
27	1
28	0
29	0
30	0
31	0
32	0
33	7
34	35
35	1
36	0
37	0
38	0
39	0
40	0
41	0
42	28
43	56
44	1
45	0
46	0
47	0
48	0
49	0
50	0
51	1
52	84
53	84
54	1
55	0
56	0
57	0
58	0
59	0
60	0
61	0
62	10
63	210
64	120
65	1
66	0
67	0
68	0
69	0
70	0
71	0
72	0
73	0
74	55
75	462
76	165
77	1
78	0
79	0
80	0
81	0
82	0
83	0
84	0
85	0
86	1
87	220
88	924
89	220
90	1

n	a(n)
0	1
1	0
2	1
3	0
4	0
5	1
6	0
7	0
8	1
9	1
10	0
11	0
12	0
13	4
14	1
15	0
16	0
17	0
18	0
19	10
20	1
21	0
22	0
23	0
24	0
25	1
26	20
27	1
28	0
29	0
30	0
31	0
32	0
33	7
34	35
35	1
36	0
37	0
38	0
39	0
40	0
41	0
42	28
43	56
44	1
45	0
46	0
47	0
48	0
49	0
50	0
51	1
52	84
53	84
54	1
55	0
56	0
57	0
58	0
59	0
60	0
61	0
62	10
63	210
64	120
65	1
66	0
67	0
68	0
69	0
70	0
71	0
72	0
73	0
74	55
75	462
76	165
77	1
78	0
79	0
80	0
81	0
82	0
83	0
84	0
85	0
86	1
87	220
88	924
89	220
90	1