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A207456 as a simple table

n a(n)
1 10
2 100
3 270
4 1450
5 5200
6 23530
7 92610
8 396100
9 1610950
10 6754210
11 27799200
12 115710130
13 478341370
14 1985702500
15 8222193630
16 34098329530
17 141276194800
18 585672013210
19 2427100765650
20 10060368444100
21 41694947333590

[10,100,270,1450,5200,23530,92610,396100,1610950,
 6754210,27799200,115710130,478341370,1985702500,
 8222193630,34098329530,141276194800,585672013210,
 2427100765650,10060368444100,41694947333590]

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Last modified May 24 08:44 EDT 2022. Contains 354024 sequences. (Running on oeis4.)