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A106515 as a simple table

na(n)
01
12
26
315
438
594
6231
7564
81372
93329
108064
1119512
1247177
13114010
14275430
15665247
161606534
173879302
189366735
1922615356
2054601628
21131825377
22318263328
23768369744
241855031473
254478479058
2610812064614
2726102729679
2863017720390

[1,2,6,15,38,94,231,564,1372,3329,8064,19512,
 47177,114010,275430,665247,1606534,3879302,
 9366735,22615356,54601628,131825377,318263328,
 768369744,1855031473,4478479058,10812064614,
 26102729679,63017720390]