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A081920 as a simple table

n a(n)
0 1
1 2
2 5
3 14
4 49
5 202
6 1069
7 6470
8 48353
9 391058
10 3767029
11 37936318
12 445650385
13 5359634906
14 74198053661
15 1036667808758
16 16516851030721
17 262805595346210
18 4735033850606437
19 84510767762583662
20 1698609728377283441

[1,2,5,14,49,202,1069,6470,48353,391058,3767029,
 37936318,445650385,5359634906,74198053661,
 1036667808758,16516851030721,262805595346210,
 4735033850606437,84510767762583662,
 1698609728377283441]

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Last modified April 25 07:41 EDT 2024. Contains 371964 sequences. (Running on oeis4.)