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A066187 as a simple table

na(n)
00
11
27
323
466
5145
6321
7600
81137
91964
103379
115463
128888
1313714
1421206
1531737
1647319
1768727
1899718
19141488
20200383
21279097
22387302
23530286
24724113
25976949
261314106
271751079
282325412
293062942
304022617
315244455
326817630
338808369
3411346219
3514536656
3618573495

[0,1,7,23,66,145,321,600,1137,1964,3379,5463,8888,
 13714,21206,31737,47319,68727,99718,141488,200383,
 279097,387302,530286,724113,976949,1314106,
 1751079,2325412,3062942,4022617,5244455,6817630,
 8808369,11346219,14536656,18573495]