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A053768 as a simple table

n a(n)
1 1
2 6
3 21
4 80
5 6982
6 269563
7 779693
8 834365
9 16176645
10 19770092
11 41049539
12 228612936
13 1950787140
14 2404785364
15 3095996836
16 5236785750
17 12482382942

[1,6,21,80,6982,269563,779693,834365,16176645,
 19770092,41049539,228612936,1950787140,2404785364,
 3095996836,5236785750,12482382942]

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Last modified August 22 03:07 EDT 2017. Contains 290942 sequences.