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A196900个作为一个简单的表

n个a(n)
11
27
71
4401
52975
620191
7141833
8986015
96866117
1047832829
11333044999
122319651781
1316154076631
14112501830469
15783493377407
165456430897109
1738000064950619
18264641895220837
191843034804766363
2012835364615219383

[1,7,71,401,2975,20191,141833,986015,6866117,47832829,333044999,2319651781,16154076631,112501830469,783493377407,5456430897109,38000064950619,264641895220837,1843034804766363,12835364615219383]