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”).

A161070 as a simple table

na(n)
10
20
30
40
50
60
70
81
91
101
111
121
131
141
151
161
171
181
191
201
211
221
231
242
251
261
272
281
291
302
311
322
333
342
353
364
373
384
395
404
415
426
435
446
457
466
477
488
497
508
519
528
539
5410
559
5611
5711
5810
5911
6012
6111
6212
6314
6413
6514
6615
6714
6815
6916
7016
7117
7218
7317
7418
7519
7618
7720
7821
7920
8022
8122
8221
8323
8424
8523
8625
8726
8825
8927
9028
9128
9230
9331
9431

[0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,2,
 1,1,2,1,1,2,1,2,3,2,3,4,3,4,5,4,5,6,5,6,7,6,7,8,7,
 8,9,8,9,10,9,11,11,10,11,12,11,12,14,13,14,15,14,
 15,16,16,17,18,17,18,19,18,20,21,20,22,22,21,23,
 24,23,25,26,25,27,28,28,30,31,31]