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A047661 as a simple table

na(n)
15
230
3115
4340
5841
61826
73591
86536
911181
1018182
1128347
1242652
1362257
1488522
15123023
16167568
17224213
18295278
19383363
20491364
21622489
22780274
23968599
241191704
251454205
261761110
272117835
282530220
293004545
303547546

[5,30,115,340,841,1826,3591,6536,11181,18182,
 28347,42652,62257,88522,123023,167568,224213,
 295278,383363,491364,622489,780274,968599,1191704,
 1454205,1761110,2117835,2530220,3004545,3547546]