A376695 - cp's OEIS frontend

A376695 a(n) = Sum_{k=0..floor(n/2)} binomial(n-2*k,floor(k/3)).

n	a(n)
0	1
1	1
2	2
3	2
4	3
5	3
6	3
7	4
8	5
9	7
10	9
11	12
12	15
13	18
14	22
15	27
16	34
17	43
18	55
19	70
20	88
21	110
22	137
23	171
24	214
25	269
26	339
27	427
28	537
29	674
30	845
31	1059
32	1328
33	1667
34	2094
35	2631
36	3305
37	4150
38	5209
39	6537
40	8204
41	10298
42	12929
43	16234
44	20384
45	25593
46	32130
47	40334
48	50632
49	63561
50	79795
51	100179
52	125772
53	157902
54	198236

[1, 1, 2, 2, 3, 3, 3, 4, 5, 7, 9, 12, 15, 18, 22, 27, 34, 43, 55, 70, 88, 110, 137, 171, 214, 269, 339, 427, 537, 674, 845, 1059, 1328, 1667, 2094, 2631, 3305, 4150, 5209, 6537, 8204, 10298, 12929, 16234, 20384, 25593, 32130, 40334, 50632, 63561, 79795, 100179, 125772, 157902, 198236]

cp's OEIS Frontend

A376695 a(n) = Sum_{k=0..floor(n/2)} binomial(n-2*k,floor(k/3)).

Table of values

List of values