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A249400 as a simple table

na(n)
12
24
35
47
58
610
711
813
914
1016
1119
1220
1326
1428
1529
1632
1741
1856
1961
2077
21100
22169
23181
24205
25338
26347
27955
281952
292197
302428
312960
323430
334618
347478
358209
368422
379235
3811107
3913481
4018194
4119229
4229854
4346532

[2,4,5,7,8,10,11,13,14,16,19,20,26,28,29,32,41,56,
 61,77,100,169,181,205,338,347,955,1952,2197,2428,
 2960,3430,4618,7478,8209,8422,9235,11107,13481,
 18194,19229,29854,46532]