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A000601 as a simple table

na(n)
01
12
24
37
411
516
623
731
841
953
1067
1183
12102
13123
14147
15174
16204
17237
18274
19314
20358
21406
22458
23514
24575
25640
26710
27785
28865
29950
301041
311137
321239
331347
341461
351581
361708
371841
381981
392128
402282
412443
422612
432788
442972
453164
463364
473572
483789
494014

[1,2,4,7,11,16,23,31,41,53,67,83,102,123,147,174,
 204,237,274,314,358,406,458,514,575,640,710,785,
 865,950,1041,1137,1239,1347,1461,1581,1708,1841,
 1981,2128,2282,2443,2612,2788,2972,3164,3364,3572,
 3789,4014]