A298355 - cp's OEIS frontend

A298355 a(n) = a(n-1) + a(n-2) + 2 a([(n-1)/2]), where a(0) = 1, a(1) = 2, a(2) = 3.

n	a(n)
0	1
1	2
2	3
3	9
4	16
5	31
6	53
7	102
8	173
9	307
10	512
11	881
12	1455
13	2442
14	4003
15	6649
16	10856
17	17851
18	29053
19	47518
20	77185
21	125727
22	203936
23	331425
24	537123
25	871458
26	1411491
27	2287833
28	3704208
29	6000047
30	9712261
31	15725606
32	25451165
33	41198483
34	66671360
35	107905545
36	174612607

[1, 2, 3, 9, 16, 31, 53, 102, 173, 307, 512, 881, 1455, 2442, 4003, 6649, 10856, 17851, 29053, 47518, 77185, 125727, 203936, 331425, 537123, 871458, 1411491, 2287833, 3704208, 6000047, 9712261, 15725606, 25451165, 41198483, 66671360, 107905545, 174612607]

cp's OEIS Frontend

A298355 a(n) = a(n-1) + a(n-2) + 2 a([(n-1)/2]), where a(0) = 1, a(1) = 2, a(2) = 3.

Table of values

List of values