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”).

A154351 as a simple table

na(n)
22
31
41
52
62
71
81
92
102
111
121
131
143
152
162
171
181
191

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