A266505 - cp's OEIS frontend

A266505 a(n) = 2*a(n - 2) + a(n - 4) with a(0) = -1, a(1) = 1, a(2) = 3, a(3) = 5.

n	a(n)
0	-1
1	1
2	3
3	5
4	5
5	11
6	13
7	27
8	31
9	65
10	75
11	157
12	181
13	379
14	437
15	915
16	1055
17	2209
18	2547
19	5333
20	6149
21	12875
22	14845
23	31083
24	35839
25	75041
26	86523
27	181165
28	208885
29	437371
30	504293
31	1055907
32	1217471
33	2549185
34	2939235
35	6154277
36	7095941
37	14857739
38	17131117
39	35869755
40	41358175
41	86597249
42	99847467

[-1, 1, 3, 5, 5, 11, 13, 27, 31, 65, 75, 157, 181, 379, 437, 915, 1055, 2209, 2547, 5333, 6149, 12875, 14845, 31083, 35839, 75041, 86523, 181165, 208885, 437371, 504293, 1055907, 1217471, 2549185, 2939235, 6154277, 7095941, 14857739, 17131117, 35869755, 41358175, 86597249, 99847467]

cp's OEIS Frontend

A266505 a(n) = 2*a(n - 2) + a(n - 4) with a(0) = -1, a(1) = 1, a(2) = 3, a(3) = 5.

Table of values

List of values