A352045 - cp's OEIS frontend

A352045 a(0) = 1; a(n) = Sum_{k=0..floor((n-1)/3)} binomial(n-1,3k) a(k).

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	5
6	11
7	22
8	43
9	85
10	170
11	341
12	683
13	1367
14	2744
15	5552
16	11381
17	23729
18	50423
19	109220
20	240845
21	539411
22	1223357
23	2800535
24	6451340
25	14915084
26	34533851
27	79949741
28	184865936
29	426627122
30	982217705
31	2255539406
32	5166125852
33	11802977573
34	26903285366

[1, 1, 1, 1, 2, 5, 11, 22, 43, 85, 170, 341, 683, 1367, 2744, 5552, 11381, 23729, 50423, 109220, 240845, 539411, 1223357, 2800535, 6451340, 14915084, 34533851, 79949741, 184865936, 426627122, 982217705, 2255539406, 5166125852, 11802977573, 26903285366]

cp's OEIS Frontend

A352045 a(0) = 1; a(n) = Sum_{k=0..floor((n-1)/3)} binomial(n-1,3k) a(k).

Table of values

List of values

cp's OEIS Frontend

A352045 a(0) = 1; a(n) = Sum_{k=0..floor((n-1)/3)} binomial(n-1,3*k) * a(k).

Table of values

List of values

A352045 a(0) = 1; a(n) = Sum_{k=0..floor((n-1)/3)} binomial(n-1,3k) a(k).