A387482 - cp's OEIS frontend

A387482 a(n) = Sum_{k=0..floor(n/3)} 3^k * 2^(n-3k) binomial(k,n-3*k)^2.

n	a(n)
0	1
1	0
2	0
3	3
4	6
5	0
6	9
7	72
8	36
9	27
10	486
11	972
12	297
13	2592
14	11664
15	10611
16	13446
17	97200
18	195129
19	149688
20	663876
21	2334987
22	2838726
23	4697676
24	21485817
25	43705008
26	51438240
27	171480483
28	517850982
29	760446144
30	1440329769
31	5065354440
32	10479570372
33	15691149819
34	44973017478

[1, 0, 0, 3, 6, 0, 9, 72, 36, 27, 486, 972, 297, 2592, 11664, 10611, 13446, 97200, 195129, 149688, 663876, 2334987, 2838726, 4697676, 21485817, 43705008, 51438240, 171480483, 517850982, 760446144, 1440329769, 5065354440, 10479570372, 15691149819, 44973017478]

cp's OEIS Frontend

A387482 a(n) = Sum_{k=0..floor(n/3)} 3^k * 2^(n-3k) binomial(k,n-3*k)^2.

Table of values

List of values

cp's OEIS Frontend

A387482 a(n) = Sum_{k=0..floor(n/3)} 3^k * 2^(n-3*k) * binomial(k,n-3*k)^2.

Table of values

List of values

A387482 a(n) = Sum_{k=0..floor(n/3)} 3^k * 2^(n-3k) binomial(k,n-3*k)^2.