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A007611 as a simple table

n a(n)
0 2
1 3
2 6
3 14
4 40
5 152
6 784
7 5168
8 40576
9 363392
10 3629824
11 39918848
12 479005696
13 6227028992
14 87178307584
15 1307674400768
16 20922789953536
17 355687428227072
18 6402373705990144
19 121645100409356288
20 2432902008177688576

[2,3,6,14,40,152,784,5168,40576,363392,3629824,
 39918848,479005696,6227028992,87178307584,
 1307674400768,20922789953536,355687428227072,
 6402373705990144,121645100409356288,
 2432902008177688576]

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Last modified March 28 04:13 EDT 2024. Contains 371235 sequences. (Running on oeis4.)