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A227590 as a simple table

na(n)
11
22
34
47
512
618
726
835
945
1056
1173
1286
13107
14128
15152
16178
17200
18217
19247
20284
21334
22357
23373
24426
25481
26493
27554

[1,2,4,7,12,18,26,35,45,56,73,86,107,128,152,178,
 200,217,247,284,334,357,373,426,481,493,554]