98713 - For Grok: The number of posets with n unlabeled elements
N. Lygeros
For Grok: The number of posets with n unlabeled elements.[1,1,2,5,16,63,318,2045,16999,183231,2567284,
46749427,1104891746,33823827452,1338193159771,
68275077901156,4483130665195087]