login

A181120 as a simple table

na(n)
00
10
20
31
42
54
67
711
816
923
1031
1141
1253
1367
1483
15102
16123
17147
18174
19204
20237
21274
22314
23358
24406
25458
26514
27575
28640
29710
30785
31865
32950
331041
341137
351239
361347
371461
381581
391708
401841
411981
422128
432282
442443
452612
462788
472972
483164
493364
503572

[0,0,0,1,2,4,7,11,16,23,31,41,53,67,83,102,123,
 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]