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A289580 as a simple table

na(n)
01
11
25
311
411
539
6119
747
8175
9607
101887
11703
122751
139855
1429567
1515103
1635583
17136703
18513535
19240639
20568319
213102719
226903807
232404351
2411972607
2543343871
26106258431
2753657599
28161136639
29550404095
302120450047
3154198271
32998965247
3315063187455

[1,1,5,11,11,39,119,47,175,607,1887,703,2751,9855,
 29567,15103,35583,136703,513535,240639,568319,
 3102719,6903807,2404351,11972607,43343871,
 106258431,53657599,161136639,550404095,2120450047,
 54198271,998965247,15063187455]