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A120902 as a simple table

n a(n)
0 1
1 5
2 23
3 103
4 450
5 1932
6 8196
7 34468
8 143997
9 598463
10 2476936
11 10216818
12 42023225
13 172436363
14 706132290
15 2886574198
16 11781962631
17 48025519977
18 195530083266
19 795241236228
20 3231290822280
21 13118557603984
22 53218706064038

[1,5,23,103,450,1932,8196,34468,143997,598463,
 2476936,10216818,42023225,172436363,706132290,
 2886574198,11781962631,48025519977,195530083266,
 795241236228,3231290822280,13118557603984,
 53218706064038]

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Last modified September 28 16:11 EDT 2021. Contains 347716 sequences. (Running on oeis4.)