login

Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.

A105159 as a simple table

na(n)
01
11
21
33
43
53
63
73
83
99
109
119
129
139
149
159
169
179
189
199
209
219
229
239
249
259
269
279
283
291
309
311
329
333
341
359
363
371
389
393
401
419
423
431
449
453
461
479
483
491
509
513
521

[1,1,1,3,3,3,3,3,3,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,
 9,9,9,9,3,1,9,1,9,3,1,9,3,1,9,3,1,9,3,1,9,3,1,9,3,
 1,9,3,1]