A298404 - cp's OEIS frontend

A298404 a(n) = 2*a(n-1) - a(n-3) + a(ceiling(n/2)), where a(0) = 1, a(1) = 1, a(2) = 1.

n	a(n)
0	1
1	1
2	1
3	2
4	4
5	9
6	18
7	36
8	67
9	125
10	223
11	397
12	687
13	1187
14	2013
15	3406
16	5692
17	9496
18	15711
19	25953
20	42633
21	69952
22	114348
23	186750
24	304235
25	495309
26	805055
27	1307888
28	2122480
29	3443311
30	5582140
31	9047492
32	14657365
33	23742086
34	38446176
35	62250698
36	100775021
37	163129819

[1, 1, 1, 2, 4, 9, 18, 36, 67, 125, 223, 397, 687, 1187, 2013, 3406, 5692, 9496, 15711, 25953, 42633, 69952, 114348, 186750, 304235, 495309, 805055, 1307888, 2122480, 3443311, 5582140, 9047492, 14657365, 23742086, 38446176, 62250698, 100775021, 163129819]

cp's OEIS Frontend

A298404 a(n) = 2*a(n-1) - a(n-3) + a(ceiling(n/2)), where a(0) = 1, a(1) = 1, a(2) = 1.

Table of values

List of values