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A009978 as a simple table

n a(n)
0 1
1 34
2 1156
3 39304
4 1336336
5 45435424
6 1544804416
7 52523350144
8 1785793904896
9 60716992766464
10 2064377754059776
11 70188843638032384
12 2386420683693101056
13 81138303245565435904
14 2758702310349224820736

[1,34,1156,39304,1336336,45435424,1544804416,
 52523350144,1785793904896,60716992766464,
 2064377754059776,70188843638032384,
 2386420683693101056,81138303245565435904,
 2758702310349224820736]

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Last modified May 26 00:02 EDT 2020. Contains 334612 sequences. (Running on oeis4.)