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A182989 as a simple table

na(n)
11
24
37
412
515
620
724
831
934
1039
1143
1250
1353
1459
1564
1675
1778
1883
1989

[1,4,7,12,15,20,24,31,34,39,43,50,53,59,64,75,78,
 83,89]