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A203294 as a simple table

na(n)
15
215
357
4188
5544
61380
73172
86687
913163
1024435
1143195
1273194
13119616
14189346
15291486
16437723
17642977
18925889
191309647
201822576
212499166
223380806
234517000
245966265
257797585
2610091447
2712941561
2816456084
2920759580
3025994452
3132323204

[5,15,57,188,544,1380,3172,6687,13163,24435,43195,
 73194,119616,189346,291486,437723,642977,925889,
 1309647,1822576,2499166,3380806,4517000,5966265,
 7797585,10091447,12941561,16456084,20759580,
 25994452,32323204]