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A146469 as a simple table

na(n)
11
21
31
413
569
6457
76223
8127787
93658281
10163817453
1111238713859
121160267254915
13182817418500667

[1,1,1,13,69,457,6223,127787,3658281,163817453,
 11238713859,1160267254915,182817418500667]