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A015217 as a simple table

na(n)
01
12
227
31204
4375629
5400208358
62991792531583
776486991418728216
813721923923633091909041
98419357054564884621321079882
1036250698926534384563556930107015907
11533815775315492783921121148190498865117564

[1,2,27,1204,375629,400208358,2991792531583,
 76486991418728216,13721923923633091909041,
 8419357054564884621321079882,
 36250698926534384563556930107015907,
 533815775315492783921121148190498865117564]