login

A115117 as a simple table

na(n)
11
22
37
420
568
6224
7780
82720
99709
1034918
11127100
12465920
131720740
146390930
1523860928
1689477120
17336860180
181272578048
194822419420
2018325176316
2169810262080
22266548209850
231019836872140
243909374443520
2515011998757888

[1,2,7,20,68,224,780,2720,9709,34918,127100,
 465920,1720740,6390930,23860928,89477120,
 336860180,1272578048,4822419420,18325176316,
 69810262080,266548209850,1019836872140,
 3909374443520,15011998757888]