A387479 - cp's OEIS frontend

A387479 a(n) = Sum_{k=0..floor(n/3)} 2^k * 3^(n-3k) binomial(k,n-3*k)^2.

n	a(n)
0	1
1	0
2	0
3	2
4	6
5	0
6	4
7	48
8	36
9	8
10	216
11	648
12	232
13	768
14	5184
15	6944
16	3696
17	28800
18	86464
19	71712
20	137376
21	691328
22	1185216
23	1067904
24	4280512
25	12749952
26	15523200
27	26248832
28	102010752
29	201056256
30	243856384
31	694548480
32	1995570432
33	3031771136
34	5109762048
35	16129681920

[1, 0, 0, 2, 6, 0, 4, 48, 36, 8, 216, 648, 232, 768, 5184, 6944, 3696, 28800, 86464, 71712, 137376, 691328, 1185216, 1067904, 4280512, 12749952, 15523200, 26248832, 102010752, 201056256, 243856384, 694548480, 1995570432, 3031771136, 5109762048, 16129681920]

cp's OEIS Frontend

A387479 a(n) = Sum_{k=0..floor(n/3)} 2^k * 3^(n-3k) binomial(k,n-3*k)^2.

Table of values

List of values

cp's OEIS Frontend

A387479 a(n) = Sum_{k=0..floor(n/3)} 2^k * 3^(n-3*k) * binomial(k,n-3*k)^2.

Table of values

List of values

A387479 a(n) = Sum_{k=0..floor(n/3)} 2^k * 3^(n-3k) binomial(k,n-3*k)^2.