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A281343 as a simple table

n a(n)
1 64
2 3281
3 4355
4 18189
5 60540
6 198619
7 639142
8 2039214
9 6489813
10 20683647
11 65987467
12 210970521
13 675532316
14 2165041339
15 6942289440
16 22270716585
17 71468916039
18 229423662632
19 736691206279
20 2366141286606
21 7601378517849

[64,3281,4355,18189,60540,198619,639142,2039214,
 6489813,20683647,65987467,210970521,675532316,
 2165041339,6942289440,22270716585,71468916039,
 229423662632,736691206279,2366141286606,
 7601378517849]

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Last modified January 27 22:53 EST 2022. Contains 350654 sequences. (Running on oeis4.)