A250848 - OEIS

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A250848 as a simple table

n	a(n)
1	1225
2	8037
3	44797
4	223933
5	1043885
6	4648157
7	20067117
8	84805533
9	353060845
10	1454214877
11	5943685037
12	24157039133
13	97778698605
14	394573711197
15	1588686176557
16	6385947864733
17	25637459261165
18	102830957105117

[1225,8037,44797,223933,1043885,4648157,20067117, 84805533,353060845,1454214877,5943685037, 24157039133,97778698605,394573711197, 1588686176557,6385947864733,25637459261165, 102830957105117]