A298351 - cp's OEIS frontend

A298351 a(n) = a(n-1) + a(n-2) + 2 a(ceiling(n/2)), where a(0) = 1, a(1) = 2, a(2) = 3.

n	a(n)
0	1
1	2
2	3
3	11
4	20
5	53
6	95
7	188
8	323
9	617
10	1046
11	1853
12	3089
13	5318
14	8783
15	14747
16	24176
17	40157
18	65567
19	107816
20	175475
21	286997
22	466178
23	759353
24	1231709
25	2001698
26	3244043
27	5263307
28	8524916
29	13817717
30	22372127
31	36238196
32	58658675
33	94977185
34	153716174
35	248824493

[1, 2, 3, 11, 20, 53, 95, 188, 323, 617, 1046, 1853, 3089, 5318, 8783, 14747, 24176, 40157, 65567, 107816, 175475, 286997, 466178, 759353, 1231709, 2001698, 3244043, 5263307, 8524916, 13817717, 22372127, 36238196, 58658675, 94977185, 153716174, 248824493]

cp's OEIS Frontend

A298351 a(n) = a(n-1) + a(n-2) + 2 a(ceiling(n/2)), where a(0) = 1, a(1) = 2, a(2) = 3.

Table of values

List of values