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A167715 as a simple table

n a(n)
0 1
1 30
2 870
3 25230
4 731670
5 21218430
6 615334470
7 17844699630
8 517496289270
9 15007392388830
10 435214379276070
11 12621216999006030
12 366015292971174870
13 10614443496164071230
14 307818861388758065670
15 8926746980273983903995

[1,30,870,25230,731670,21218430,615334470,
 17844699630,517496289270,15007392388830,
 435214379276070,12621216999006030,
 366015292971174870,10614443496164071230,
 307818861388758065670,8926746980273983903995]

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Last modified May 20 15:29 EDT 2013. Contains 225463 sequences.