A024490 - cp's OEIS frontend

A024490 a(n) = C(n-1,1) + C(n-3,3) + ... + C(n-2m-1,2m+1), where m = floor((n-2)/4).

n	a(n)
2	1
3	2
4	3
5	4
6	6
7	10
8	17
9	28
10	45
11	72
12	116
13	188
14	305
15	494
16	799
17	1292
18	2090
19	3382
20	5473
21	8856
22	14329
23	23184
24	37512
25	60696
26	98209
27	158906
28	257115
29	416020
30	673134
31	1089154
32	1762289
33	2851444
34	4613733
35	7465176
36	12078908
37	19544084
38	31622993
39	51167078
40	82790071

[1, 2, 3, 4, 6, 10, 17, 28, 45, 72, 116, 188, 305, 494, 799, 1292, 2090, 3382, 5473, 8856, 14329, 23184, 37512, 60696, 98209, 158906, 257115, 416020, 673134, 1089154, 1762289, 2851444, 4613733, 7465176, 12078908, 19544084, 31622993, 51167078, 82790071]

cp's OEIS Frontend

A024490 a(n) = C(n-1,1) + C(n-3,3) + ... + C(n-2m-1,2m+1), where m = floor((n-2)/4).

Table of values

List of values

cp's OEIS Frontend

A024490 a(n) = C(n-1,1) + C(n-3,3) + ... + C(n-2*m-1,2*m+1), where m = floor((n-2)/4).

Table of values

List of values

A024490 a(n) = C(n-1,1) + C(n-3,3) + ... + C(n-2m-1,2m+1), where m = floor((n-2)/4).