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A260925 as a simple table

na(n)
1491
2831
33358
410617
527582
681848
7253264
8736065
92137558
106366003
1118836612
1255281733
13162975870
14481592042
151419353824
164182760615
1712337678966
1836391723458
19107281631494
20316367367773
21932912838818
222751181217369

[491,831,3358,10617,27582,81848,253264,736065,
 2137558,6366003,18836612,55281733,162975870,
 481592042,1419353824,4182760615,12337678966,
 36391723458,107281631494,316367367773,
 932912838818,2751181217369]