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”).

A033774 as a simple table

na(n)
01
11
20
32
41
51
63
70
82
93
102
112
121
131
142
156
162
171
187
194
203
217
220
234
2410
254
264
272
284
295
3010
314
321
3313
346
354
3612
371
384
3914
405
414
423
436
445
4515
468
470
4816
496
508
5120
522
538
5418
558
568
573
588
598
6025
619
622
6320
647
6510
6621
672
6810
6925
708
7112
721
7312
7412
7524
7610
771
7830
798
809
8128

[1,1,0,2,1,1,3,0,2,3,2,2,1,1,2,6,2,1,7,4,3,7,0,4,
 10,4,4,2,4,5,10,4,1,13,6,4,12,1,4,14,5,4,3,6,5,15,
 8,0,16,6,8,20,2,8,18,8,8,3,8,8,25,9,2,20,7,10,21,
 2,10,25,8,12,1,12,12,24,10,1,30,8,9,28]