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A236895 as a simple table

na(n)
181
2339
31426
46545
530727
6148966
7734805
83679063
918601074
1094728601
11484797943
122489729974
1312816761181
1466088527271
15341168095114
161762603785057
179111229406855
1847115466594414
19243704127371685
201260784775294295

[81,339,1426,6545,30727,148966,734805,3679063,
 18601074,94728601,484797943,2489729974,
 12816761181,66088527271,341168095114,
 1762603785057,9111229406855,47115466594414,
 243704127371685,1260784775294295]