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A167892 as a simple table

n a(n)
1 1
2 5
3 30
4 226
5 1990
6 19414
7 203455
8 2248355
9 25887399
10 307993015
11 3763786811
12 47032778955
13 598933188955
14 7751562502555
15 101741582076580
16 1351906409905480
17 18159677984049580
18 246298405721739580
19 3369517588450715680
20 46457194476711692080

[1,5,30,226,1990,19414,203455,2248355,25887399,
 307993015,3763786811,47032778955,598933188955,
 7751562502555,101741582076580,1351906409905480,
 18159677984049580,246298405721739580,
 3369517588450715680,46457194476711692080]

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Last modified October 19 13:38 EDT 2018. Contains 316361 sequences. (Running on oeis4.)