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A066444 as a simple table

na(n)
10
2121
31331
414641
5161051
61771561
719487171
8214358881
92357947691
1025937424601
110
12166394893969
13471664657228
143140272804489
158065845196901
1616532101601985
175101754322287
1857157537871161
1973663224996225

[0,121,1331,14641,161051,1771561,19487171,
 214358881,2357947691,25937424601,0,166394893969,
 471664657228,3140272804489,8065845196901,
 16532101601985,5101754322287,57157537871161,
 73663224996225]