A007068 - cp's OEIS frontend

A007068 a(n) = a(n-1) + (3+(-1)^n)*a(n-2)/2.

n	a(n)
1	1
2	3
3	4
4	10
5	14
6	34
7	48
8	116
9	164
10	396
11	560
12	1352
13	1912
14	4616
15	6528
16	15760
17	22288
18	53808
19	76096
20	183712
21	259808
22	627232
23	887040
24	2141504
25	3028544
26	7311552
27	10340096
28	24963200
29	35303296
30	85229696
31	120532992
32	290992384
33	411525376
34	993510144
35	1405035520
36	3392055808

[1, 3, 4, 10, 14, 34, 48, 116, 164, 396, 560, 1352, 1912, 4616, 6528, 15760, 22288, 53808, 76096, 183712, 259808, 627232, 887040, 2141504, 3028544, 7311552, 10340096, 24963200, 35303296, 85229696, 120532992, 290992384, 411525376, 993510144, 1405035520, 3392055808]

cp's OEIS Frontend

A007068 a(n) = a(n-1) + (3+(-1)^n)*a(n-2)/2.

Table of values

List of values