login

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

A230507 as a simple table

na(n)
10
20
31
41
51
61
71
82
92
101
112
123
134
142
153
163
173
183
193
202
213
223
235
244
252
262
275
285
293
303
316
327
338
344
353
367
378
386
395
406
418
429
437
444
455
468
478
487
494
505
5110
529
535
544
557
568
579
586
594
608
6111
627
634
645
656
6610
677
682
695
708
717
725
733
743
758
768
772
783
796
804
816
823
831
845
856
863
872
883
893
907
913
921
935
945
952
964
974
984
997
1005

[0,0,1,1,1,1,1,2,2,1,2,3,4,2,3,3,3,3,3,2,3,3,5,4,
 2,2,5,5,3,3,6,7,8,4,3,7,8,6,5,6,8,9,7,4,5,8,8,7,4,
 5,10,9,5,4,7,8,9,6,4,8,11,7,4,5,6,10,7,2,5,8,7,5,
 3,3,8,8,2,3,6,4,6,3,1,5,6,3,2,3,3,7,3,1,5,5,2,4,4,
 4,7,5]