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”).

A037968 as a simple table

na(n)
11
22
32
42
52
62
72
82
92
102
113
122
132
142
153
162
172
183
193
202
213
222
232
243
252
262
273
283
293
303
312
323
333
343
353
363
372
383
393
403
413
423
432
443
453
463
473
483
493
503
513
523
533
543
553
563
573
583
593
603
613
623
633
643
653
663
673
683
693
703
713
723
733
743
754
763
773
784
793
803
813
823
833
843
853
863
873
883
893
903
913
923
933
943
953
963
973
983
994
1003
1013
1023
1033
1043
1053

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