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A080241 as a simple table

na(n)
00
11
23
37
413
527
655
7109
8219
9437
10875
111751
123501
137003
1414005
1528011
1656021
17112043
18224085
19448171
20896341
211792683
223585365
237170731
2414341463
2528682925
2657365851
27114731701
28229463403
29458926805
30917853611
311835707221

[0,1,3,7,13,27,55,109,219,437,875,1751,3501,7003,
 14005,28011,56021,112043,224085,448171,896341,
 1792683,3585365,7170731,14341463,28682925,
 57365851,114731701,229463403,458926805,917853611,
 1835707221]