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A015469 as a simple table

n a(n)
0 0
1 1
2 1
3 12
4 133
5 16105
6 1963358
7 2595689713
8 3480804151551
9 50586130104323474
10 746191869036731097905
11 119280194867984161366496439
12 19354414621214347335584253057344
13 34032051023004810891710239239325511573

[0,1,1,12,133,16105,1963358,2595689713,
 3480804151551,50586130104323474,
 746191869036731097905,119280194867984161366496439,
 19354414621214347335584253057344,
 34032051023004810891710239239325511573]

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Last modified February 22 10:24 EST 2020. Contains 332134 sequences. (Running on oeis4.)