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A046664 as a simple table

na(n)
10
21
38
429
579
6174
7338
8597
9984
101531
112284
123285
134581
146232
158294
1610821
1713896

[0,1,8,29,79,174,338,597,984,1531,2284,3285,4581,
 6232,8294,10821,13896]