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A120757 as a simple table

n a(n)
1 0
2 2
3 7
4 29
5 117
6 474
7 1919
8 7770
9 31460
10 127379
11 515747
12 2088217
13 8455018
14 34233669
15 138609296
16 561217582
17 2272323599
18 9200450421
19 37251863241
20 150829715006
21 610697048403
22 2472661868474
23 10011603514040
24 40536155064419

[0,2,7,29,117,474,1919,7770,31460,127379,515747,
 2088217,8455018,34233669,138609296,561217582,
 2272323599,9200450421,37251863241,150829715006,
 610697048403,2472661868474,10011603514040,
 40536155064419]

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Last modified December 9 19:51 EST 2019. Contains 329879 sequences. (Running on oeis4.)