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A288599 as a simple table

n a(n)
0 2
1 4
2 6
3 10
4 16
5 28
6 50
7 90
8 164
9 300
10 550
11 1010
12 1856
13 3412
14 6274
15 11538
16 21220
17 39028
18 71782
19 132026
20 242832
21 446636
22 821490
23 1510954
24 2779076
25 5111516
26 9401542
27 17292130
28 31805184
29 58498852
30 107596162
31 197900194
32 363995204
33 669491556
34 1231386950

[2,4,6,10,16,28,50,90,164,300,550,1010,1856,3412,
 6274,11538,21220,39028,71782,132026,242832,446636,
 821490,1510954,2779076,5111516,9401542,17292130,
 31805184,58498852,107596162,197900194,363995204,
 669491556,1231386950]

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Last modified December 5 00:11 EST 2021. Contains 349527 sequences. (Running on oeis4.)