登录

A143373号作为一个简单的表

n个a(n)
11
21
1
4
55
69
717
830
955
10100
11181
12330
13599
141088
151978
163593
176529
1811864
1921556
2039169
2171171
22129319
23234978
24426961
25775801
261409655
272561384
284654113
298456664
3015366012
3127920509

[1,1,1,3,5,9,17,30,55,100,181,330,599,1088,1978,3593,6529,11864,21556,39169,71171,129319,234978,426961,775801,1409655,2561384,4654113,8456664,15366012,27920509]