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A094291 as a simple table

na(n)
11
22
34
49
518
640
7100
8225
9525
101225
113136
127056
1317640
1444100
15108900
16261360
17637065
181656369
194008004
2010020010
2125050025
2264128064
23155739584
24393853824
251012766976
262538950544
276347376360
2815868440900
2941408180100
30102252852900

[1,2,4,9,18,40,100,225,525,1225,3136,7056,17640,
 44100,108900,261360,637065,1656369,4008004,
 10020010,25050025,64128064,155739584,393853824,
 1012766976,2538950544,6347376360,15868440900,
 41408180100,102252852900]