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A004380 as a simple table

n a(n)
12 1
13 91
14 4753
15 187460
16 6210820
17 182637273
18 4925156775
19 124397910208
20 2985733783935
21 68805631064170
22 1534076755992935
23 33283806441690896
24 705873715441872264
25 14684612966748995725
26 300515354528763817950 

[1,91,4753,187460,6210820,182637273,4925156775,
 124397910208,2985733783935,68805631064170,
 1534076755992935,33283806441690896,
 705873715441872264,14684612966748995725,
 300515354528763817950]

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Last modified June 4 01:34 EDT 2024. Contains 373089 sequences. (Running on oeis4.)