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A236581 as a simple table

na(n)
01
15
237
3269
41949
514121
6102313
7741305
85371097
938916077
10281964941
112042966149
1214802232757
13107249008849
14777068573905
155630220503025
1640793546383409
17295568073335893
182141527121824885
1915516352499614333
20112423136012925517
21814557513519681785

[1,5,37,269,1949,14121,102313,741305,5371097,
 38916077,281964941,2042966149,14802232757,
 107249008849,777068573905,5630220503025,
 40793546383409,295568073335893,2141527121824885,
 15516352499614333,112423136012925517,
 814557513519681785]