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A051405 as a simple table

n a(n)
0 2
1 10
2 70
3 574
4 5002
5 44530
6 399310
7 3589414
8 32291602
9 290585050
10 2615147350
11 23535971854
12 211822683802
13 1906400965570
14 17157599124190
15 154418363419894
16 1389765184685602
17 12507886403890090
18 112570976860169830
19 1013138789417005534

[2,10,70,574,5002,44530,399310,3589414,32291602,
 290585050,2615147350,23535971854,211822683802,
 1906400965570,17157599124190,154418363419894,
 1389765184685602,12507886403890090,
 112570976860169830,1013138789417005534]

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Last modified May 19 02:12 EDT 2024. Contains 372666 sequences. (Running on oeis4.)