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A372487 as a simple table

na(n)
11
21
34
427
532
628125
72519424
823162146875
9458647142400000
107850009286973311176250
1114754517327872000000000000000
12782831631808408787429183093888778240000
1314334253326826803757070581682405376000000000000000
146615519361823637433520391368199431823532478208000000000000000

[1,1,4,27,32,28125,2519424,23162146875,
 458647142400000,7850009286973311176250,
 14754517327872000000000000000,
 782831631808408787429183093888778240000,
 14334253326826803757070581682405376000000000000000\
 ,
 66155193618236374335203913681994318235324782080000\
 00000000000]