A028860 - cp's OEIS frontend

A028860 a(n+2) = 2a(n+1) + 2a(n); a(0) = -1, a(1) = 1.

n	a(n)
0	-1
1	1
2	0
3	2
4	4
5	12
6	32
7	88
8	240
9	656
10	1792
11	4896
12	13376
13	36544
14	99840
15	272768
16	745216
17	2035968
18	5562368
19	15196672
20	41518080
21	113429504
22	309895168
23	846649344
24	2313089024
25	6319476736
26	17265131520
27	47169216512
28	128868696064
29	352075825152
30	961889042432
31	2627929735168

[-1, 1, 0, 2, 4, 12, 32, 88, 240, 656, 1792, 4896, 13376, 36544, 99840, 272768, 745216, 2035968, 5562368, 15196672, 41518080, 113429504, 309895168, 846649344, 2313089024, 6319476736, 17265131520, 47169216512, 128868696064, 352075825152, 961889042432, 2627929735168]

cp's OEIS Frontend

A028860 a(n+2) = 2a(n+1) + 2a(n); a(0) = -1, a(1) = 1.

Table of values

List of values

cp's OEIS Frontend

A028860 a(n+2) = 2*a(n+1) + 2*a(n); a(0) = -1, a(1) = 1.

Table of values

List of values

A028860 a(n+2) = 2a(n+1) + 2a(n); a(0) = -1, a(1) = 1.