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A209006 as a simple table

na(n)
11
22
37
438
5243
61854
714701
8116960
9916381
107170239
1156496359
12449785468
133619072169

[1,2,7,38,243,1854,14701,116960,916381,7170239,
 56496359,449785468,3619072169]