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A196021 as a simple table

na(n)
11
21
34
45
516
622
764
8109
9283
10486
111189
122174
135097
149528
1521904
1641549
1792022
18177043
19387715
20754910
211624543
223174095
236751375
2413296454
2527962241
2655173405
27115220461
28228121892
29472419049
30937688232
311930884229
323840200525
337867929073
3415660179800

[1,1,4,5,16,22,64,109,283,486,1189,2174,5097,9528,
 21904,41549,92022,177043,387715,754910,1624543,
 3174095,6751375,13296454,27962241,55173405,
 115220461,228121892,472419049,937688232,
 1930884229,3840200525,7867929073,15660179800]