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A261845 as a simple table

na(n)
01
17
228
3476
41386
58106
6117936
7322764
81440579
96172495
1099773646
11232110704
12981073576
133329628176
1414040114012
15224848217580
16490210909629
171828885568055
185750093241172
1920040621544916
2069910543160794
211238596672832718
222451410591056280
238705347941656016

[1,7,28,476,1386,8106,117936,322764,1440579,
 6172495,99773646,232110704,981073576,3329628176,
 14040114012,224848217580,490210909629,
 1828885568055,5750093241172,20040621544916,
 69910543160794,1238596672832718,2451410591056280,
 8705347941656016]