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A200931 as a simple table

n a(n)
1 21
2 70
3 86
4 466
5 11620
6 46664
7 19639
8 1992563
9 19428961
10 27064328
11 185609499
12 6071753195
13 27077249191
14 10857445569
15 1382034290296
16 15507764357015
17 22979292470431
18 166552455290745
19 5855288096822543
20 26804755495077100

[21,70,86,466,11620,46664,19639,1992563,19428961,
 27064328,185609499,6071753195,27077249191,
 10857445569,1382034290296,15507764357015,
 22979292470431,166552455290745,5855288096822543,
 26804755495077100]

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Last modified August 5 15:07 EDT 2021. Contains 346470 sequences. (Running on oeis4.)