A162485 - cp's OEIS frontend

A162485 a(1)=4, a(2)=6; for n > 2, a(n) = 2a(n-1) + a(n-2) - 4((n-1) mod 2).

n	a(n)
1	4
2	6
3	16
4	34
5	84
6	198
7	480
8	1154
9	2788
10	6726
11	16240
12	39202
13	94644
14	228486
15	551616
16	1331714
17	3215044
18	7761798
19	18738640
20	45239074
21	109216788
22	263672646
23	636562080
24	1536796802
25	3710155684
26	8957108166
27	21624372016
28	52205852194
29	126036076404
30	304278004998
31	734592086400

[4, 6, 16, 34, 84, 198, 480, 1154, 2788, 6726, 16240, 39202, 94644, 228486, 551616, 1331714, 3215044, 7761798, 18738640, 45239074, 109216788, 263672646, 636562080, 1536796802, 3710155684, 8957108166, 21624372016, 52205852194, 126036076404, 304278004998, 734592086400]

cp's OEIS Frontend

A162485 a(1)=4, a(2)=6; for n > 2, a(n) = 2a(n-1) + a(n-2) - 4((n-1) mod 2).

Table of values

List of values

cp's OEIS Frontend

A162485 a(1)=4, a(2)=6; for n > 2, a(n) = 2*a(n-1) + a(n-2) - 4*((n-1) mod 2).

Table of values

List of values

A162485 a(1)=4, a(2)=6; for n > 2, a(n) = 2a(n-1) + a(n-2) - 4((n-1) mod 2).