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A139469 as a simple table

n a(n)
0 0
1 0
2 1
3 9
4 36
5 101
6 261
7 882
8 3921
9 17253
10 67554
11 243695
12 876789
13 3324906
14 13166791
15 52301709
16 203824548
17 782913717
18 3010327497
19 11695756698
20 45823049817
21 179787741723
22 703527078258
23 2747647985241
24 10739885115573
25 42082084255050
26 165225573240651

[0,0,1,9,36,101,261,882,3921,17253,67554,243695,
 876789,3324906,13166791,52301709,203824548,
 782913717,3010327497,11695756698,45823049817,
 179787741723,703527078258,2747647985241,
 10739885115573,42082084255050,165225573240651]

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Last modified April 25 16:39 EDT 2024. Contains 371989 sequences. (Running on oeis4.)