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A181551 as a simple table

na(n)
11
22
32
46
510
615
717
822
930
1042
11100
1277
1396
14103
15120
1694
17141
18206
19339
20548
21843
221409
23978
241198
251920
262837
275377

[1,2,2,6,10,15,17,22,30,42,100,77,96,103,120,94,
 141,206,339,548,843,1409,978,1198,1920,2837,5377]