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A139201 as a simple table

na(n)
14
25
37
48
511
614
716
817
918
1020
1143
1250
1355
1459
15171
16461
17859
182830
193818
205421
215593
2210118
2310880
2424350

[4,5,7,8,11,14,16,17,18,20,43,50,55,59,171,461,
 859,2830,3818,5421,5593,10118,10880,24350]