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A291063 as a simple table

na(n)
21
33
44
57
611
712
815
915
1031
1163
1267
13100
14144
15213
16344
17479
18698
19993
201502
212247
223252
234777
246970
2510284
2615211
2722298
2832728
2947985
3070645
31103962
32152707
33224383
34329509
35484452
36712275
371046737
381538165
392260110
403321933
414882575
427175739

[1,3,4,7,11,12,15,15,31,63,67,100,144,213,344,479,
 698,993,1502,2247,3252,4777,6970,10284,15211,
 22298,32728,47985,70645,103962,152707,224383,
 329509,484452,712275,1046737,1538165,2260110,
 3321933,4882575,7175739]