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A028817 as a simple table

na(n)
11
24
39
4121
5484
6676
710201
812321
914641
1040804
1144944
1269696
1394249
141002001
151234321
164008004
175221225
186948496
19100020001
20102030201
21104060401
22121242121
23123454321
24125686521
25400080004
26404090404
27522808225
28617323716
29942060249
3010000200001

[1,4,9,121,484,676,10201,12321,14641,40804,44944,
 69696,94249,1002001,1234321,4008004,5221225,
 6948496,100020001,102030201,104060401,121242121,
 123454321,125686521,400080004,404090404,522808225,
 617323716,942060249,10000200001]