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A251983 as a simple table

na(n)
12930
29822
39822
441682
573222
641682
7138390
8516108
9516108
10138390
11463054
122703512
134379034
142703512
15463054
161762248
1716324414
1826230040
1926230040
2016324414
211762248
226881308
23113817844
24196459816
25153525420
26196459816

[2930,9822,9822,41682,73222,41682,138390,516108,
 516108,138390,463054,2703512,4379034,2703512,
 463054,1762248,16324414,26230040,26230040,
 16324414,1762248,6881308,113817844,196459816,
 153525420,196459816]