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A013626 as a simple table

na(n)
01
15
27
325
470
549
6125
7525
8735
9343
10625
113500
127350
136860
142401
153125
1621875
1761250
1885750
1960025
2016807
2115625
22131250
23459375
24857500
25900375
26504210
27117649
2878125
29765625
303215625
317503125
3210504375
338823675
344117715

[1,5,7,25,70,49,125,525,735,343,625,3500,7350,
 6860,2401,3125,21875,61250,85750,60025,16807,
 15625,131250,459375,857500,900375,504210,117649,
 78125,765625,3215625,7503125,10504375,8823675,
 4117715]