A057977 - cp's OEIS frontend

A057977 GCD of consecutive central binomial coefficients: a(n) = gcd(A001405(n+1), A001405(n)).

n	a(n)
0	1
1	1
2	1
3	3
4	2
5	10
6	5
7	35
8	14
9	126
10	42
11	462
12	132
13	1716
14	429
15	6435
16	1430
17	24310
18	4862
19	92378
20	16796
21	352716
22	58786
23	1352078
24	208012
25	5200300
26	742900
27	20058300
28	2674440
29	77558760
30	9694845
31	300540195
32	35357670
33	1166803110
34	129644790
35	4537567650

[1, 1, 1, 3, 2, 10, 5, 35, 14, 126, 42, 462, 132, 1716, 429, 6435, 1430, 24310, 4862, 92378, 16796, 352716, 58786, 1352078, 208012, 5200300, 742900, 20058300, 2674440, 77558760, 9694845, 300540195, 35357670, 1166803110, 129644790, 4537567650]

cp's OEIS Frontend

A057977 GCD of consecutive central binomial coefficients: a(n) = gcd(A001405(n+1), A001405(n)).

Table of values

List of values