A387552 - cp's OEIS frontend

A387552 a(n) = (1/2) * Sum_{k=0..floor(n/3)} 2^k * binomial(2k+2,2n-6*k+1).

n	a(n)
0	1
1	0
2	0
3	4
4	4
5	0
6	12
7	40
8	12
9	32
10	224
11	224
12	112
13	960
14	2016
15	1152
16	3600
17	12672
18	13120
19	15168
20	64256
21	110848
22	99904
23	291200
24	734912
25	836608
26	1376256
27	4114432
28	6516224
29	8042496
30	20953088
31	43890688
32	56483072
33	107188224
34	260720640
35	404997120
36	609147904
37	1431527424

[1, 0, 0, 4, 4, 0, 12, 40, 12, 32, 224, 224, 112, 960, 2016, 1152, 3600, 12672, 13120, 15168, 64256, 110848, 99904, 291200, 734912, 836608, 1376256, 4114432, 6516224, 8042496, 20953088, 43890688, 56483072, 107188224, 260720640, 404997120, 609147904, 1431527424]

cp's OEIS Frontend

A387552 a(n) = (1/2) * Sum_{k=0..floor(n/3)} 2^k * binomial(2k+2,2n-6*k+1).

Table of values

List of values

cp's OEIS Frontend

A387552 a(n) = (1/2) * Sum_{k=0..floor(n/3)} 2^k * binomial(2*k+2,2*n-6*k+1).

Table of values

List of values

A387552 a(n) = (1/2) * Sum_{k=0..floor(n/3)} 2^k * binomial(2k+2,2n-6*k+1).