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A112648 as a simple table

na(n)
12
24
37
48
511
612
714
815
916
1020
1128
1229
1331
1432
1534
1640
1741
1842
1945

[2,4,7,8,11,12,14,15,16,20,28,29,31,32,34,40,41,
 42,45]