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”).

A050493 as a simple table

na(n)
00
11
22
32
42
54
63
73
82
94
105
112
124
135
144
154
162
174
185
196
204
216
227
233
244
254
267
276
285
296
305
315
322
334
345
356
365
378
386
394
405
417
426
436
448
454
465
474
484
495
508
516
525
537
547
553
566
577
588
597
606
617
626
636
642
654
665
676
685
698
707
718
724
736
748
755
768
779
784
795
805
818
827
838
848
857
868
878
887
898
9012
915
926
935
946
955
964
975
988
997
1008

[0,1,2,2,2,4,3,3,2,4,5,2,4,5,4,4,2,4,5,6,4,6,7,3,
 4,4,7,6,5,6,5,5,2,4,5,6,5,8,6,4,5,7,6,6,8,4,5,4,4,
 5,8,6,5,7,7,3,6,7,8,7,6,7,6,6,2,4,5,6,5,8,7,8,4,6,
 8,5,8,9,4,5,5,8,7,8,8,7,8,8,7,8,12,5,6,5,6,5,4,5,
 8,7,8]