login

A066315 as a simple table

na(n)
11
21
33
47
520
651
7154
8460
91476
104860
1116544
1257321
13202059
14720370
152593470
169408000
1734350506
18126108252
19465200332
201723341185
216408356052
2223911255544
2389495909408
24335916703284
251264114452975
264768464107355

[1,1,3,7,20,51,154,460,1476,4860,16544,57321,
 202059,720370,2593470,9408000,34350506,126108252,
 465200332,1723341185,6408356052,23911255544,
 89495909408,335916703284,1264114452975,
 4768464107355]