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A082891 as a simple table

na(n)
12
27
31129
41327
519609
631397
7155921
8370261
91357201
102010733
1120831323
1220831323
13191912783
14436273009
153842610773
1610726904659
1725056082087
1825056082087
1925056082087
201346294310749
211408695493609
222614941710599
2313829048559701
2419581334192423
2519581334192423

[2,7,1129,1327,19609,31397,155921,370261,1357201,
 2010733,20831323,20831323,191912783,436273009,
 3842610773,10726904659,25056082087,25056082087,
 25056082087,1346294310749,1408695493609,
 2614941710599,13829048559701,19581334192423,
 19581334192423]