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A076648 as a simple table

na(n)
1315
2351
3819
43375
524921
647520
799540
8107541
9125631
10189175
11410805
12763665
13877365
141680855
152480555
166911079
177849479
189646395
1911245365
2012528165
2114242800
2214684055
2316921191
2417194365
2519395025
2627782160
2733830685
2834823075
2936278649
3043955955

[315,351,819,3375,24921,47520,99540,107541,125631,
 189175,410805,763665,877365,1680855,2480555,
 6911079,7849479,9646395,11245365,12528165,
 14242800,14684055,16921191,17194365,19395025,
 27782160,33830685,34823075,36278649,43955955]