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A309329 as a simple table

na(n)
14
247
3509
45273
553047
6532887
75356259
853765483
9539119753
105402600081
1154118210435
12541947386821
135425907665571
1454313871643797
15543611236251491
165440228524355329
1754438462600610510
18544705097744731559
195449909581264135103

[4,47,509,5273,53047,532887,5356259,53765483,
 539119753,5402600081,54118210435,541947386821,
 5425907665571,54313871643797,543611236251491,
 5440228524355329,54438462600610510,
 544705097744731559,5449909581264135103]