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A227999 as a simple table

na(n)
01
11
21
31
42
52
65
711
825
997
10220
111396
126053
1330467
14249431
151381913
1619850884
17160799404
181942868797
1936133524445
20458473480079
2113521902050025
22220176552243482
237006033824529130
24276364333237297549
257470025110120086101
26460097285931623600317
2717010560092754291510533
281372227474279446678113082

[1,1,1,1,2,2,5,11,25,97,220,1396,6053,30467,
 249431,1381913,19850884,160799404,1942868797,
 36133524445,458473480079,13521902050025,
 220176552243482,7006033824529130,
 276364333237297549,7470025110120086101,
 460097285931623600317,17010560092754291510533,
 1372227474279446678113082]