A298415 - cp's OEIS frontend

A298415 a(n) = a(n-1) + 2*a(n-2) + a([n/2]), where a(0) = 1, a(1) = 1, a(2) = 1.

n	a(n)
0	1
1	1
2	1
3	4
4	7
5	16
6	34
7	70
8	145
9	292
10	598
11	1198
12	2428
13	4858
14	9784
15	19570
16	39283
17	78568
18	157426
19	314854
20	630304
21	1260610
22	2522416
23	5044834
24	10092094
25	20184190
26	40373236
27	80746474
28	161502730
29	323005462
30	646030492
31	1292060986
32	2584161253
33	5168322508
34	10336723582

[1, 1, 1, 4, 7, 16, 34, 70, 145, 292, 598, 1198, 2428, 4858, 9784, 19570, 39283, 78568, 157426, 314854, 630304, 1260610, 2522416, 5044834, 10092094, 20184190, 40373236, 80746474, 161502730, 323005462, 646030492, 1292060986, 2584161253, 5168322508, 10336723582]

cp's OEIS Frontend

A298415 a(n) = a(n-1) + 2*a(n-2) + a([n/2]), where a(0) = 1, a(1) = 1, a(2) = 1.

Table of values

List of values