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”).

A070674 as a simple table

na(n)
11
21
31
41
51
61
72
81
94
101
111
121
133
149
151
161
171
187
194
201
214
221
231
241
251
263
274
289
291
301
315
321
331
341
3511
3613
377
385
3916
401
411
4225
436
441
4516
461
471
481
4918
501
511
529
531
547
551
569
574
581
591
601
6113
625
634
641
6516
661
6729
681
691
7011
711
7225
732
747
751
765
7723
7855
7923
801
8110
821
831
8425
851

[1,1,1,1,1,1,2,1,4,1,1,1,3,9,1,1,1,7,4,1,4,1,1,1,
 1,3,4,9,1,1,5,1,1,1,11,13,7,5,16,1,1,25,6,1,16,1,
 1,1,18,1,1,9,1,7,1,9,4,1,1,1,13,5,4,1,16,1,29,1,1,
 11,1,25,2,7,1,5,23,55,23,1,10,1,1,25,1]