login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A175242 as a simple table

na(n)
11
21
32
41
52
62
72
81
93
102
111
122
131
142
154
161
172
183
191
202
214
221
231
242
252
261
274
282
291
304
312
321
333
342
353
363
371
381
392
402
411
424
431
441
456
461
471
482
492
502
514
521
531
544
552
562
572
581
591
604
611
622
636
641
653
663
671
682
692
703
711
723
732
741
754
761
772
782
791
802
814
821
831
844
854
861
872
881
891
906
912
921
934
941
952
962
971
982
995
1002
1011
1024
1031
1041
1056

[1,1,2,1,2,2,2,1,3,2,1,2,1,2,4,1,2,3,1,2,4,1,1,2,
 2,1,4,2,1,4,2,1,3,2,3,3,1,1,2,2,1,4,1,1,6,1,1,2,2,
 2,4,1,1,4,2,2,2,1,1,4,1,2,6,1,3,3,1,2,2,3,1,3,2,1,
 4,1,2,2,1,2,4,1,1,4,4,1,2,1,1,6,2,1,4,1,2,2,1,2,5,
 2,1,4,1,1,6]