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A109523 as a simple table

n a(n)
0 0
1 2
2 2
3 2
4 5
5 8
6 13
7 25
8 45
9 81
10 150
11 275
12 504
13 928
14 1706
15 3136
16 5769
17 10610
18 19513
19 35891
20 66013
21 121415
22 223318
23 410745
24 755476
25 1389538
26 2555758
27 4700770
28 8646065
29 15902592
30 29249425
31 53798081
32 98950097
33 181997601
34 334745778

[0,2,2,2,5,8,13,25,45,81,150,275,504,928,1706,
 3136,5769,10610,19513,35891,66013,121415,223318,
 410745,755476,1389538,2555758,4700770,8646065,
 15902592,29249425,53798081,98950097,181997601,
 334745778]

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Last modified July 13 05:18 EDT 2020. Contains 335673 sequences. (Running on oeis4.)