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A153911 as a simple table

n a(n)
0 1
1 2
2 412
3 3309
4 6170
5 28173
6 363650
7 995263
8 7017397
9 125707566
10 496907299
11 5084773943
12 131364083278
13 749724226722
14 10945594000512
15 414717014027555
16 3429998068477278
17 72977331677447737
18 3992874305065142952

[1,2,412,3309,6170,28173,363650,995263,7017397,
 125707566,496907299,5084773943,131364083278,
 749724226722,10945594000512,414717014027555,
 3429998068477278,72977331677447737,
 3992874305065142952]

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Last modified December 3 21:14 EST 2016. Contains 278745 sequences.