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A027790 as a simple table

n a(n)
2 10
3 80
4 350
5 1120
6 2940
7 6720
8 13860
9 26400
10 47190
11 80080
12 130130
13 203840
14 309400
15 456960
16 658920
17 930240
18 1288770
19 1755600
20 2355430
21 3116960
22 4073300
23 5262400
24 6727500
25 8517600
26 10687950
27 13300560
28 16424730
29 20137600

[10,80,350,1120,2940,6720,13860,26400,47190,80080,
 130130,203840,309400,456960,658920,930240,1288770,
 1755600,2355430,3116960,4073300,5262400,6727500,
 8517600,10687950,13300560,16424730,20137600]

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Last modified April 7 11:07 EDT 2020. Contains 333301 sequences. (Running on oeis4.)