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A000956 as a simple table

na(n)
12
217
340
45126
5211888
6134691268742
728539643139633848
82443533691612948322627563638932102
969737579558305654640845711279133047105190578109248

[2,17,40,5126,211888,134691268742,
 28539643139633848,
 2443533691612948322627563638932102,
 69737579558305654640845711279133047105190578109248\
 ]