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A211297 as a simple table

n a(n)
0 1
1 3
2 9
3 25
4 69
5 195
6 555
7 1573
8 4457
9 12677
10 36165
11 103323
12 295639
13 847587
14 2434755
15 7006089
16 20193261
17 58296927
18 168567687
19 488155597
20 1415686337
21 4111268669
22 11955274925
23 34808988199
24 101471734355
25 296139036809
26 865204909777
27 2530413173787
28 7407817001559
29 21706686476055
30 63662015359655

[1,3,9,25,69,195,555,1573,4457,12677,36165,103323,
 295639,847587,2434755,7006089,20193261,58296927,
 168567687,488155597,1415686337,4111268669,
 11955274925,34808988199,101471734355,296139036809,
 865204909777,2530413173787,7407817001559,
 21706686476055,63662015359655]

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Last modified January 26 23:54 EST 2022. Contains 350601 sequences. (Running on oeis4.)