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A091669 as a simple table

na(n)
11
21
32
47
542
6434
77812
8248031
914055090
101436430198
11267176016828
1291151551074486
1357425477176926180
1467196011936600334340
15146782968474309770332296
16601204690999713530559792879

[1,1,2,7,42,434,7812,248031,14055090,1436430198,
 267176016828,91151551074486,57425477176926180,
 67196011936600334340,146782968474309770332296,
 601204690999713530559792879]