A071919 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

A071919 as a simple table

n	a(n)
0	1
1	1
2	0
3	1
4	1
5	0
6	1
7	2
8	1
9	0
10	1
11	3
12	3
13	1
14	0
15	1
16	4
17	6
18	4
19	1
20	0
21	1
22	5
23	10
24	10
25	5
26	1
27	0
28	1
29	6
30	15
31	20
32	15
33	6
34	1
35	0
36	1
37	7
38	21
39	35
40	35
41	21
42	7
43	1
44	0
45	1
46	8
47	28
48	56
49	70
50	56
51	28
52	8
53	1
54	0
55	1
56	9
57	36
58	84
59	126
60	126
61	84
62	36
63	9
64	1
65	0
66	1
67	10
68	45
69	120
70	210
71	252
72	210
73	120
74	45
75	10
76	1
77	0
78	1
79	11
80	55
81	165
82	330
83	462
84	462
85	330
86	165
87	55
88	11
89	1
90	0

[1,1,0,1,1,0,1,2,1,0,1,3,3,1,0,1,4,6,4,1,0,1,5,10, 10,5,1,0,1,6,15,20,15,6,1,0,1,7,21,35,35,21,7,1,0, 1,8,28,56,70,56,28,8,1,0,1,9,36,84,126,126,84,36, 9,1,0,1,10,45,120,210,252,210,120,45,10,1,0,1,11, 55,165,330,462,462,330,165,55,11,1,0]

n	a(n)
0	1
1	1
2	0
3	1
4	1
5	0
6	1
7	2
8	1
9	0
10	1
11	3
12	3
13	1
14	0
15	1
16	4
17	6
18	4
19	1
20	0
21	1
22	5
23	10
24	10
25	5
26	1
27	0
28	1
29	6
30	15
31	20
32	15
33	6
34	1
35	0
36	1
37	7
38	21
39	35
40	35
41	21
42	7
43	1
44	0
45	1
46	8
47	28
48	56
49	70
50	56
51	28
52	8
53	1
54	0
55	1
56	9
57	36
58	84
59	126
60	126
61	84
62	36
63	9
64	1
65	0
66	1
67	10
68	45
69	120
70	210
71	252
72	210
73	120
74	45
75	10
76	1
77	0
78	1
79	11
80	55
81	165
82	330
83	462
84	462
85	330
86	165
87	55
88	11
89	1
90	0

n	a(n)
0	1
1	1
2	0
3	1
4	1
5	0
6	1
7	2
8	1
9	0
10	1
11	3
12	3
13	1
14	0
15	1
16	4
17	6
18	4
19	1
20	0
21	1
22	5
23	10
24	10
25	5
26	1
27	0
28	1
29	6
30	15
31	20
32	15
33	6
34	1
35	0
36	1
37	7
38	21
39	35
40	35
41	21
42	7
43	1
44	0
45	1
46	8
47	28
48	56
49	70
50	56
51	28
52	8
53	1
54	0
55	1
56	9
57	36
58	84
59	126
60	126
61	84
62	36
63	9
64	1
65	0
66	1
67	10
68	45
69	120
70	210
71	252
72	210
73	120
74	45
75	10
76	1
77	0
78	1
79	11
80	55
81	165
82	330
83	462
84	462
85	330
86	165
87	55
88	11
89	1
90	0

n	a(n)
0	1
1	1
2	0
3	1
4	1
5	0
6	1
7	2
8	1
9	0
10	1
11	3
12	3
13	1
14	0
15	1
16	4
17	6
18	4
19	1
20	0
21	1
22	5
23	10
24	10
25	5
26	1
27	0
28	1
29	6
30	15
31	20
32	15
33	6
34	1
35	0
36	1
37	7
38	21
39	35
40	35
41	21
42	7
43	1
44	0
45	1
46	8
47	28
48	56
49	70
50	56
51	28
52	8
53	1
54	0
55	1
56	9
57	36
58	84
59	126
60	126
61	84
62	36
63	9
64	1
65	0
66	1
67	10
68	45
69	120
70	210
71	252
72	210
73	120
74	45
75	10
76	1
77	0
78	1
79	11
80	55
81	165
82	330
83	462
84	462
85	330
86	165
87	55
88	11
89	1
90	0