A131381 - cp's OEIS frontend

A131381 a(n) = binomial(2*n,n) mod (n+2), with n>=1.

n	a(n)
1	2
2	2
3	0
4	4
5	0
6	4
7	3
8	0
9	0
10	4
11	0
12	0
13	5
14	8
15	0
16	0
17	0
18	0
19	0
20	0
21	0
22	0
23	0
24	0
25	9
26	0
27	0
28	10
29	0
30	16
31	11
32	0
33	0
34	24
35	0
36	0
37	26
38	0
39	0
40	28
41	0
42	0
43	0
44	0
45	0
46	0
47	0
48	0
49	0
50	0
51	0
52	0
53	0
54	0
55	0
56	0
57	0
58	0
59	0
60	0
61	0
62	32
63	0
64	0
65	0
66	0
67	0
68	0
69	0
70	0
71	0
72	0
73	0
74	0
75	0
76	0
77	0
78	0
79	27
80	0
81	0
82	28
83	0
84	0
85	29
86	0
87	0
88	60
89	0
90	0
91	62
92	0
93	0
94	64
95	0
96	0
97	0
98	0

[2, 2, 0, 4, 0, 4, 3, 0, 0, 4, 0, 0, 5, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 10, 0, 16, 11, 0, 0, 24, 0, 0, 26, 0, 0, 28, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 27, 0, 0, 28, 0, 0, 29, 0, 0, 60, 0, 0, 62, 0, 0, 64, 0, 0, 0, 0]

cp's OEIS Frontend

A131381 a(n) = binomial(2*n,n) mod (n+2), with n>=1.

Table of values

List of values

n	a(n)
1	2
2	2
3	0
4	4
5	0
6	4
7	3
8	0
9	0
10	4
11	0
12	0
13	5
14	8
15	0
16	0
17	0
18	0
19	0
20	0
21	0
22	0
23	0
24	0
25	9
26	0
27	0
28	10
29	0
30	16
31	11
32	0
33	0
34	24
35	0
36	0
37	26
38	0
39	0
40	28
41	0
42	0
43	0
44	0
45	0
46	0
47	0
48	0
49	0
50	0
51	0
52	0
53	0
54	0
55	0
56	0
57	0
58	0
59	0
60	0
61	0
62	32
63	0
64	0
65	0
66	0
67	0
68	0
69	0
70	0
71	0
72	0
73	0
74	0
75	0
76	0
77	0
78	0
79	27
80	0
81	0
82	28
83	0
84	0
85	29
86	0
87	0
88	60
89	0
90	0
91	62
92	0
93	0
94	64
95	0
96	0
97	0
98	0

n	a(n)
1	2
2	2
3	0
4	4
5	0
6	4
7	3
8	0
9	0
10	4
11	0
12	0
13	5
14	8
15	0
16	0
17	0
18	0
19	0
20	0
21	0
22	0
23	0
24	0
25	9
26	0
27	0
28	10
29	0
30	16
31	11
32	0
33	0
34	24
35	0
36	0
37	26
38	0
39	0
40	28
41	0
42	0
43	0
44	0
45	0
46	0
47	0
48	0
49	0
50	0
51	0
52	0
53	0
54	0
55	0
56	0
57	0
58	0
59	0
60	0
61	0
62	32
63	0
64	0
65	0
66	0
67	0
68	0
69	0
70	0
71	0
72	0
73	0
74	0
75	0
76	0
77	0
78	0
79	27
80	0
81	0
82	28
83	0
84	0
85	29
86	0
87	0
88	60
89	0
90	0
91	62
92	0
93	0
94	64
95	0
96	0
97	0
98	0

n	a(n)
1	2
2	2
3	0
4	4
5	0
6	4
7	3
8	0
9	0
10	4
11	0
12	0
13	5
14	8
15	0
16	0
17	0
18	0
19	0
20	0
21	0
22	0
23	0
24	0
25	9
26	0
27	0
28	10
29	0
30	16
31	11
32	0
33	0
34	24
35	0
36	0
37	26
38	0
39	0
40	28
41	0
42	0
43	0
44	0
45	0
46	0
47	0
48	0
49	0
50	0
51	0
52	0
53	0
54	0
55	0
56	0
57	0
58	0
59	0
60	0
61	0
62	32
63	0
64	0
65	0
66	0
67	0
68	0
69	0
70	0
71	0
72	0
73	0
74	0
75	0
76	0
77	0
78	0
79	27
80	0
81	0
82	28
83	0
84	0
85	29
86	0
87	0
88	60
89	0
90	0
91	62
92	0
93	0
94	64
95	0
96	0
97	0
98	0