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A000574 as a simple table

na(n)
33
416
551
6126
7266
8504
9882
101452
112277
123432
135005
147098
159828
1613328
1717748
1823256
1930039
2038304
2148279
2260214
2374382
2491080
25110630
26133380
27159705
28190008
29224721
30264306
31309256
32360096
33417384
34481712
35553707
36634032
37723387
38822510

[3,16,51,126,266,504,882,1452,2277,3432,5005,7098,
 9828,13328,17748,23256,30039,38304,48279,60214,
 74382,91080,110630,133380,159705,190008,224721,
 264306,309256,360096,417384,481712,553707,634032,
 723387,822510]