login

A337897 as a simple table

na(n)
11
221
3201
41076
54025
611901
729841
866256
9134001
10251725
11445401
12750036
131211561
141888901
152856225
164205376
176048481
188520741
1911783401
2016026900
2121474201
2228384301
2337055921
2447831376
2561100625
2677305501
2796944121

[1,21,201,1076,4025,11901,29841,66256,134001,
 251725,445401,750036,1211561,1888901,2856225,
 4205376,6048481,8520741,11783401,16026900,
 21474201,28384301,37055921,47831376,61100625,
 77305501,96944121]