A049610 - cp's OEIS frontend

A049610 a(n) = Sum_{k=0..floor(n/2)} kbinomial(n,2k) = floor(n*2^(n-3)).

n	a(n)
0	0
1	0
2	1
3	3
4	8
5	20
6	48
7	112
8	256
9	576
10	1280
11	2816
12	6144
13	13312
14	28672
15	61440
16	131072
17	278528
18	589824
19	1245184
20	2621440
21	5505024
22	11534336
23	24117248
24	50331648
25	104857600
26	218103808
27	452984832
28	939524096
29	1946157056
30	4026531840
31	8321499136
32	17179869184
33	35433480192

[0, 0, 1, 3, 8, 20, 48, 112, 256, 576, 1280, 2816, 6144, 13312, 28672, 61440, 131072, 278528, 589824, 1245184, 2621440, 5505024, 11534336, 24117248, 50331648, 104857600, 218103808, 452984832, 939524096, 1946157056, 4026531840, 8321499136, 17179869184, 35433480192]

cp's OEIS Frontend

A049610 a(n) = Sum_{k=0..floor(n/2)} kbinomial(n,2k) = floor(n*2^(n-3)).

Table of values

List of values

cp's OEIS Frontend

A049610 a(n) = Sum_{k=0..floor(n/2)} k*binomial(n,2*k) = floor(n*2^(n-3)).

Table of values

List of values

A049610 a(n) = Sum_{k=0..floor(n/2)} kbinomial(n,2k) = floor(n*2^(n-3)).