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A221444 as a simple table

na(n)
131
21577
376055
43669101
5177320895
68569227073
7414116287743
820012580804813
9967127817426727
1046737411242830049
112258631763028702151
12109150620595639469645
135274812021536486627631
14254910523741875128561121

[31,1577,76055,3669101,177320895,8569227073,
 414116287743,20012580804813,967127817426727,
 46737411242830049,2258631763028702151,
 109150620595639469645,5274812021536486627631,
 254910523741875128561121]