A360152 - cp's OEIS frontend

A360152 a(n) = Sum_{k=0..floor(n/3)} binomial(2n-5k,n-3*k).

n	a(n)
0	1
1	2
2	6
3	21
4	73
5	262
6	960
7	3562
8	13347
9	50393
10	191406
11	730555
12	2799622
13	10765092
14	41513751
15	160490906
16	621805286
17	2413738744
18	9385635299
19	36550685683
20	142534105563
21	556514122937
22	2175296066129
23	8511430278018
24	33334299581686
25	130662787246407

[1, 2, 6, 21, 73, 262, 960, 3562, 13347, 50393, 191406, 730555, 2799622, 10765092, 41513751, 160490906, 621805286, 2413738744, 9385635299, 36550685683, 142534105563, 556514122937, 2175296066129, 8511430278018, 33334299581686, 130662787246407]

cp's OEIS Frontend

A360152 a(n) = Sum_{k=0..floor(n/3)} binomial(2n-5k,n-3*k).

Table of values

List of values

cp's OEIS Frontend

A360152 a(n) = Sum_{k=0..floor(n/3)} binomial(2*n-5*k,n-3*k).

Table of values

List of values

A360152 a(n) = Sum_{k=0..floor(n/3)} binomial(2n-5k,n-3*k).