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A125906 as a simple table

na(n)
01
15
21
326
410
51
6140
777
815
91
10777
11540
12153
1320
141
154425
163630
171325
18254
1925
201
2125755
2223900
2310509
242620
25380
2630
271
28152675
29155764
3079065
3123989
324550
33531
3435
351
36919139
371010560
38575078
39203560
4047270
417240
42707
4340
441

[1,5,1,26,10,1,140,77,15,1,777,540,153,20,1,4425,
 3630,1325,254,25,1,25755,23900,10509,2620,380,30,
 1,152675,155764,79065,23989,4550,531,35,1,919139,
 1010560,575078,203560,47270,7240,707,40,1]