A373654 - cp's OEIS frontend

A373654 a(n) = Sum_{k=0..floor(n/3)} binomial(2n-5k-1,k).

n	a(n)
0	1
1	1
2	1
3	1
4	3
5	5
6	7
7	12
8	21
9	34
10	55
11	92
12	153
13	251
14	414
15	686
16	1133
17	1869
18	3088
19	5103
20	8427
21	13917
22	22990
23	37975
24	62721
25	103598
26	171121
27	282646
28	466852
29	771119
30	1273690
31	2103796
32	3474913
33	5739647
34	9480387
35	15659094
36	25864698
37	42721676
38	70564951
39	116554700
40	192517665

[1, 1, 1, 1, 3, 5, 7, 12, 21, 34, 55, 92, 153, 251, 414, 686, 1133, 1869, 3088, 5103, 8427, 13917, 22990, 37975, 62721, 103598, 171121, 282646, 466852, 771119, 1273690, 2103796, 3474913, 5739647, 9480387, 15659094, 25864698, 42721676, 70564951, 116554700, 192517665]

cp's OEIS Frontend

A373654 a(n) = Sum_{k=0..floor(n/3)} binomial(2n-5k-1,k).

Table of values

List of values

cp's OEIS Frontend

A373654 a(n) = Sum_{k=0..floor(n/3)} binomial(2*n-5*k-1,k).

Table of values

List of values

A373654 a(n) = Sum_{k=0..floor(n/3)} binomial(2n-5k-1,k).