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A027133 as a simple table

na(n)
01
12
24
39
423
559
6155
7429
81188
93298
109181
1125634
1271781
13201569
14571795
151639244
164702499
1713500396
1838790727
19111555296
20321100627
21925086012
222667533646
237698716068
2422238169212
2564473303788
26187912261301
27547850119836

[1,2,4,9,23,59,155,429,1188,3298,9181,25634,71781,
 201569,571795,1639244,4702499,13500396,38790727,
 111555296,321100627,925086012,2667533646,
 7698716068,22238169212,64473303788,187912261301,
 547850119836]