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A150042 as a simple table

na(n)
01
12
26
318
458
5198
6699
72555
89496
935858
10137357
11532718
122088905
138261370
1432902004
15131899705
16531966574
172157304467
188790642741
1935967722498
20147723568543
21608879673427
222517980169752
2310444486214272
2443440861244434
25181131270913433
26757027164305121
273170993736654692

[1,2,6,18,58,198,699,2555,9496,35858,137357,
 532718,2088905,8261370,32902004,131899705,
 531966574,2157304467,8790642741,35967722498,
 147723568543,608879673427,2517980169752,
 10444486214272,43440861244434,181131270913433,
 757027164305121,3170993736654692]