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A096743 as a simple table

na(n)
01
11
25
335
4135
51755
66303
739815
8132675
93322515
1010561455
1164566253
12199681945
132391238415
147233344915

[1,1,5,35,135,1755,6303,39815,132675,3322515,
 10561455,64566253,199681945,2391238415,7233344915]