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A185303 as a simple table

na(n)
10
20
30
40
50
61
7100
8967255
914971125930
10278086517599356
116521004095675547914
12197419530111112377546537
137747427934648623352166753715
14392370903258277676503800999871543
1525436929780226775791085690703723141426
162090584629532654146005764252197925046719651

[0,0,0,0,0,1,100,967255,14971125930,
 278086517599356,6521004095675547914,
 197419530111112377546537,
 7747427934648623352166753715,
 392370903258277676503800999871543,
 25436929780226775791085690703723141426,
 2090584629532654146005764252197925046719651]