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A181555 as a simple table

na(n)
01
12
236
327000
41944810000
565774855015100000
6733384949590939374729000000
79037114296609938214167920266348510000000
878354300210436852307898467208663359164858967744100000000

[1,2,36,27000,1944810000,65774855015100000,
 733384949590939374729000000,
 9037114296609938214167920266348510000000,
 78354300210436852307898467208663359164858967744100\
 000000]