A100192 - cp's OEIS frontend

A100192 a(n) = Sum_{k=0..n} binomial(2n,n+k)2^k.

n	a(n)
0	1
1	4
2	18
3	82
4	374
5	1704
6	7752
7	35214
8	159750
9	723880
10	3276908
11	14821668
12	66991436
13	302605528
14	1366182276
15	6165204102
16	27811282374
17	125415953208
18	565408947756
19	2548400193852
20	11483706241044
21	51739037228688
22	233070330199296
23	1049777052815052
24	4727770393417884

[1, 4, 18, 82, 374, 1704, 7752, 35214, 159750, 723880, 3276908, 14821668, 66991436, 302605528, 1366182276, 6165204102, 27811282374, 125415953208, 565408947756, 2548400193852, 11483706241044, 51739037228688, 233070330199296, 1049777052815052, 4727770393417884]

cp's OEIS Frontend

A100192 a(n) = Sum_{k=0..n} binomial(2n,n+k)2^k.

Table of values

List of values

cp's OEIS Frontend

A100192 a(n) = Sum_{k=0..n} binomial(2*n,n+k)*2^k.

Table of values

List of values

A100192 a(n) = Sum_{k=0..n} binomial(2n,n+k)2^k.