A101551 - cp's OEIS frontend

A101551 a(n) = C(n-2,2)+C(n-5,5)+...+C(n-(3floor((n-3)/3)+2),3floor((n-3)/3)+2).

n	a(n)
0	0
1	0
2	0
3	0
4	1
5	3
6	6
7	10
8	15
9	21
10	29
11	42
12	66
13	111
14	192
15	330
16	554
17	906
18	1452
19	2303
20	3651
21	5826
22	9382
23	15225
24	24807
25	40431
26	65748
27	106584
28	172321
29	278184
30	448980
31	725140
32	1172412
33	1897380
34	3072365
35	4975551
36	8055918
37	13038606
38	21096027
39	34125561

[0, 0, 0, 0, 1, 3, 6, 10, 15, 21, 29, 42, 66, 111, 192, 330, 554, 906, 1452, 2303, 3651, 5826, 9382, 15225, 24807, 40431, 65748, 106584, 172321, 278184, 448980, 725140, 1172412, 1897380, 3072365, 4975551, 8055918, 13038606, 21096027, 34125561]

cp's OEIS Frontend

A101551 a(n) = C(n-2,2)+C(n-5,5)+...+C(n-(3floor((n-3)/3)+2),3floor((n-3)/3)+2).

Table of values

List of values

cp's OEIS Frontend

A101551 a(n) = C(n-2,2)+C(n-5,5)+...+C(n-(3*floor((n-3)/3)+2),3*floor((n-3)/3)+2).

Table of values

List of values

A101551 a(n) = C(n-2,2)+C(n-5,5)+...+C(n-(3floor((n-3)/3)+2),3floor((n-3)/3)+2).