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A261501 as a simple table

na(n)
01
11
28
385
41128
516451
6255704
74141383
869159400
91182125128
1020581159608
11363704640476
126506965279992
13117626432708864
142145180358634664
1539421026305282660
16729242353169440744
1713568988503585900648
18253785064586356459616
194768543107831461199897

[1,1,8,85,1128,16451,255704,4141383,69159400,
 1182125128,20581159608,363704640476,6506965279992,
 117626432708864,2145180358634664,
 39421026305282660,729242353169440744,
 13568988503585900648,253785064586356459616,
 4768543107831461199897]