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A153699 as a simple table

na(n)
11
21
31
42
53
68
715
8264
9334
10465
11683
12713
13758
148741
1515912
1618920
1738560
18409895

[1,1,1,2,3,8,15,264,334,465,683,713,758,8741,
 15912,18920,38560,409895]