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A229639 as a simple table

n a(n)
1 0
2 39
3 244
4 1109
5 6031
6 28448
7 136778
8 633328
9 2905016
10 13118016
11 58633648
12 259523840
13 1139461984
14 4967050352
15 21516000592
16 92679568016
17 397212173264
18 1694694809008
19 7200709256752
20 30481238674128
21 128588345884944

[0,39,244,1109,6031,28448,136778,633328,2905016,
 13118016,58633648,259523840,1139461984,4967050352,
 21516000592,92679568016,397212173264,
 1694694809008,7200709256752,30481238674128,
 128588345884944]

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Last modified November 27 12:51 EST 2021. Contains 349394 sequences. (Running on oeis4.)