A387555 - cp's OEIS frontend

A387555 a(n) = (1/2) * Sum_{k=0..floor(n/3)} 2^(n-k) * binomial(2k+2,2n-6*k+1).

n	a(n)
0	1
1	0
2	0
3	8
4	16
5	0
6	48
7	320
8	192
9	256
10	3584
11	7168
12	3328
13	30720
14	129024
15	129024
16	245760
17	1622016
18	3272704
19	3293184
20	16596992
21	56360960
22	74776576
23	166985728
24	752156672
25	1552941056
26	2268069888
27	8638693376
28	25806503936
29	41498443776
30	99265544192
31	357275009024

[1, 0, 0, 8, 16, 0, 48, 320, 192, 256, 3584, 7168, 3328, 30720, 129024, 129024, 245760, 1622016, 3272704, 3293184, 16596992, 56360960, 74776576, 166985728, 752156672, 1552941056, 2268069888, 8638693376, 25806503936, 41498443776, 99265544192, 357275009024]

cp's OEIS Frontend

A387555 a(n) = (1/2) * Sum_{k=0..floor(n/3)} 2^(n-k) * binomial(2k+2,2n-6*k+1).

Table of values

List of values

cp's OEIS Frontend

A387555 a(n) = (1/2) * Sum_{k=0..floor(n/3)} 2^(n-k) * binomial(2*k+2,2*n-6*k+1).

Table of values

List of values

A387555 a(n) = (1/2) * Sum_{k=0..floor(n/3)} 2^(n-k) * binomial(2k+2,2n-6*k+1).