A065982 - cp's OEIS frontend

A065982 a(n) = (n+1)binomial(2n,n) - 2^(2*n-1).

n	a(n)
1	2
2	10
3	48
4	222
5	1000
6	4420
7	19264
8	83062
9	355128
10	1508028
11	6368032
12	26765420
13	112053968
14	467531272
15	1945009408
16	8070882982
17	33414977368
18	138067832332
19	569466322528
20	2345021291332
21	9642649982128
22	39598183143352
23	162417965373568

[2, 10, 48, 222, 1000, 4420, 19264, 83062, 355128, 1508028, 6368032, 26765420, 112053968, 467531272, 1945009408, 8070882982, 33414977368, 138067832332, 569466322528, 2345021291332, 9642649982128, 39598183143352, 162417965373568]

cp's OEIS Frontend

A065982 a(n) = (n+1)binomial(2n,n) - 2^(2*n-1).

Table of values

List of values

cp's OEIS Frontend

A065982 a(n) = (n+1)*binomial(2*n,n) - 2^(2*n-1).

Table of values

List of values

A065982 a(n) = (n+1)binomial(2n,n) - 2^(2*n-1).