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A074140 as a simple table

n a(n)
0 1
1 2
2 10
3 50
4 346
5 3182
6 38770
7 609290
8 11226106
9 250148582
10 7057182250
11 216512001950
12 7903965900226
13 321552174623162
14 13779150603234010
15 644574260638821590
16 33968684108427733426
17 1994885097404292104942
18 121496572792097514728530
19 8114030083731371137603190

[1,2,10,50,346,3182,38770,609290,11226106,
 250148582,7057182250,216512001950,7903965900226,
 321552174623162,13779150603234010,
 644574260638821590,33968684108427733426,
 1994885097404292104942,121496572792097514728530,
 8114030083731371137603190]

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Last modified December 3 08:48 EST 2016. Contains 278698 sequences.