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A033551 as a simple table

na(n)
11
23
37
413
520
628
738
850
964
1079
1195
12113
13133
14154
15177
16201
17227
18254
19284
20314
21346
22380
23415
24452
25491
26531
27573
28616
29661
30707
31755
32804
33855
34908
35962
361018
371075
381134
391195
401257
411320
421385
431452
441521

[1,3,7,13,20,28,38,50,64,79,95,113,133,154,177,
 201,227,254,284,314,346,380,415,452,491,531,573,
 616,661,707,755,804,855,908,962,1018,1075,1134,
 1195,1257,1320,1385,1452,1521]