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A020544 as a simple table

n a(n)
0 1
1 1
2 13
3 181
4 3313
5 85681
6 3106081
7 152379361
8 9753972481
9 790089189121
10 79009114867201
11 9560105293939201
12 1376655193941350401
13 232654728224433715201
14 45600326738788914892801
15 10260073516337350497792001
16 2626578820184244778524672001

[1,1,13,181,3313,85681,3106081,152379361,
 9753972481,790089189121,79009114867201,
 9560105293939201,1376655193941350401,
 232654728224433715201,45600326738788914892801,
 10260073516337350497792001,
 2626578820184244778524672001]

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)