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”).

A050432 as a simple table

na(n)
11
21
31
41
52
61
71
81
91
102
111
121
131
141
152
162
173
181
191
202
213
222
232
241
253
262
271
281
293
301
312
322
331
343
351
361
372
383
391
402
412
423
432
441
451
463
472
482
491
501
513
521
532
541
553
561
571
582
593
602
612
622
633
643
654
662
672
683
693
703
713
723
731
742
751
763
771
781
792
802
813
822
832
843
854
863
873
882
893
902

[1,1,1,1,2,1,1,1,1,2,1,1,1,1,2,2,3,1,1,2,3,2,2,1,
 3,2,1,1,3,1,2,2,1,3,1,1,2,3,1,2,2,3,2,1,1,3,2,2,1,
 1,3,1,2,1,3,1,1,2,3,2,2,2,3,3,4,2,2,3,3,3,3,3,1,2,
 1,3,1,1,2,2,3,2,2,3,4,3,3,2,3,2]