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A164680 as a simple table

na(n)
11
23
39
420
542
678
7139
8231
9372
10573
11861
121254
131791
142499
153432
164629
176162
188085
1910492
2013455
2117094
2221503
2326832
2433201
2540795
2649764
2760333
2872687
2987096
30103785
31123075
32145236
33170646
34199626
35232617
36269997
37312277
38359898
39413448
40473438

[1,3,9,20,42,78,139,231,372,573,861,1254,1791,
 2499,3432,4629,6162,8085,10492,13455,17094,21503,
 26832,33201,40795,49764,60333,72687,87096,103785,
 123075,145236,170646,199626,232617,269997,312277,
 359898,413448,473438]