登录

A198480号作为一个简单的表

n个a(n)
01
113
297
685
44801
533613
6235297
71647085
811529601
980707213
10564950497
113954653485
1227682574401
13193778020813
141356446145697
159495123019885
1666465861139201
17465261027974413
183256827195820897
1922797790370746285

[1,13,97,685,4801,33613,235297,1647085,11529601,80707213,564950497,3954653485,27682574401,193778020813,1356446145697,9495123019885,66465861139201,465261027974413,3256827195820897,22797790370746285]