A100067 - cp's OEIS frontend

A100067 a(n) = Sum_{k=0..floor(n/2)} binomial(n,k)2^(n-2k).

n	a(n)
0	1
1	2
2	6
3	14
4	38
5	92
6	240
7	590
8	1510
9	3740
10	9476
11	23564
12	59372
13	147968
14	371636
15	927374
16	2324870
17	5805740
18	14538660
19	36322340
20	90898228
21	227153192
22	568235696
23	1420236524
24	3551943388
25	8878506392
26	22201466280
27	55498465400
28	138766221800
29	346895496200
30	867316299260
31	2168213189390

[1, 2, 6, 14, 38, 92, 240, 590, 1510, 3740, 9476, 23564, 59372, 147968, 371636, 927374, 2324870, 5805740, 14538660, 36322340, 90898228, 227153192, 568235696, 1420236524, 3551943388, 8878506392, 22201466280, 55498465400, 138766221800, 346895496200, 867316299260, 2168213189390]

cp's OEIS Frontend

A100067 a(n) = Sum_{k=0..floor(n/2)} binomial(n,k)2^(n-2k).

Table of values

List of values

cp's OEIS Frontend

A100067 a(n) = Sum_{k=0..floor(n/2)} binomial(n,k)*2^(n-2*k).

Table of values

List of values

A100067 a(n) = Sum_{k=0..floor(n/2)} binomial(n,k)2^(n-2k).