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A251849 as a simple table

na(n)
167209
21186375
330754863
4736849090
518030121976
6446202017757
710975505375791
8270105866416962
96653251957613181
10163825989926409605
114033879187750936772
1299332339015825220869
132445969584375372705203

[67209,1186375,30754863,736849090,18030121976,
 446202017757,10975505375791,270105866416962,
 6653251957613181,163825989926409605,
 4033879187750936772,99332339015825220869,
 2445969584375372705203]