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A221513 as a simple table

n a(n)
1 0
2 5
3 21
4 150
5 884
6 5513
7 33860
8 208756
9 1285694
10 7921082
11 48795589
12 300602292
13 1851824780
14 11407972817
15 70277580919
16 432937512858
17 2667065000212
18 16430167559715
19 101216282472118
20 623532037268338
21 3841202145282104

[0,5,21,150,884,5513,33860,208756,1285694,7921082,
 48795589,300602292,1851824780,11407972817,
 70277580919,432937512858,2667065000212,
 16430167559715,101216282472118,623532037268338,
 3841202145282104]

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Last modified January 17 09:52 EST 2020. Contains 330949 sequences. (Running on oeis4.)