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A011943 as a simple table

na(n)
11
27
397
41351
518817
6262087
73650401
850843527
9708158977
109863382151
11137379191137
121913445293767
1326650854921601
14371198523608647
155170128475599457
1672010600134783751
171002978273411373057
1813969685227624439047
19194572614913330773601
202710046923559006391367

[1,7,97,1351,18817,262087,3650401,50843527,
 708158977,9863382151,137379191137,1913445293767,
 26650854921601,371198523608647,5170128475599457,
 72010600134783751,1002978273411373057,
 13969685227624439047,194572614913330773601,
 2710046923559006391367]