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A176621 as a simple table

n a(n)
0 2
1 3
2 4
3 11
4 40
5 157
6 656
7 2721
8 11346
9 47337
10 197398
11 823451
12 3434718
13 14326815
14 59760224
15 249271079
16 1039759044
17 4337038713
18 18090636780
19 75459593981
20 314756746798
21 1312912064069
22 5476413466674
23 22843193551799
24 95283436047290

[2,3,4,11,40,157,656,2721,11346,47337,197398,
 823451,3434718,14326815,59760224,249271079,
 1039759044,4337038713,18090636780,75459593981,
 314756746798,1312912064069,5476413466674,
 22843193551799,95283436047290]

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Last modified April 24 18:17 EDT 2024. Contains 371962 sequences. (Running on oeis4.)