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A198914 as a simple table

na(n)
11
21
31
42
54
62
75
834
934
105
1115
12500
132051
14500
1515
1652
1710867
18269940
19269940
2010867
2152
22203
23313132
2454381563
25319608038
2654381563
27313132
28203
29877
3010856948
3113088156547
32481871809749
33481871809749
3413088156547
3510856948
36877
374139

[1,1,1,2,4,2,5,34,34,5,15,500,2051,500,15,52,
 10867,269940,269940,10867,52,203,313132,54381563,
 319608038,54381563,313132,203,877,10856948,
 13088156547,481871809749,481871809749,13088156547,
 10856948,877,4139]