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A215859 as a simple table

n a(n)
9 1
10 45
11 1650
12 54945
13 1795794
14 59546487
15 2043490735
16 73415619420
17 2779264615127
18 111226656560877
19 4710924208619304
20 211105699482022215
21 9997623229700175712
22 499562336689773070263
23 26288415481415803589236
24 1454007169289989503463230
25 84361156450441837460650255

[1,45,1650,54945,1795794,59546487,2043490735,
 73415619420,2779264615127,111226656560877,
 4710924208619304,211105699482022215,
 9997623229700175712,499562336689773070263,
 26288415481415803589236,1454007169289989503463230,
 84361156450441837460650255]

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Last modified May 29 16:43 EDT 2020. Contains 334704 sequences. (Running on oeis4.)