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A305364 as a simple table

n a(n)
1 3
2 120
3 310
4 1532
5 7196
6 32765
7 163682
8 791180
9 3881007
10 19185785
11 94442736
12 466918841
13 2307509126
14 11405401174
15 56404226833
16 278908057093
17 1379320204745
18 6821594426465
19 33736893175669
20 166853365413519
21 825211552764054

[3,120,310,1532,7196,32765,163682,791180,3881007,
 19185785,94442736,466918841,2307509126,
 11405401174,56404226833,278908057093,
 1379320204745,6821594426465,33736893175669,
 166853365413519,825211552764054]

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Last modified January 19 08:18 EST 2022. Contains 350464 sequences. (Running on oeis4.)