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A128386 as a simple table

n a(n)
0 1
1 1
2 4
3 7
4 28
5 58
6 232
7 523
8 2092
9 4966
10 19864
11 48838
12 195352
13 492724
14 1970896
15 5068915
16 20275660
17 52955950
18 211823800
19 560198962
20 2240795848
21 5987822380
22 23951289520
23 64563867454
24 258255469816
25 701383563388
26 2805534253552

[1,1,4,7,28,58,232,523,2092,4966,19864,48838,
 195352,492724,1970896,5068915,20275660,52955950,
 211823800,560198962,2240795848,5987822380,
 23951289520,64563867454,258255469816,701383563388,
 2805534253552]

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Last modified April 23 03:30 EDT 2024. Contains 371906 sequences. (Running on oeis4.)