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A091344 as a simple table

na(n)
00
11
27
331
4115
5391
61267
73991
812355
937831
10115027
11348151
121050595
133164071
149516787
1528599511
1685896835
17257887111
18774054547
192322950071
206970423075
2120914414951
2262749536307
23188261191831
24564808741315
251694476555591

[0,1,7,31,115,391,1267,3991,12355,37831,115027,
 348151,1050595,3164071,9516787,28599511,85896835,
 257887111,774054547,2322950071,6970423075,
 20914414951,62749536307,188261191831,564808741315,
 1694476555591]