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A291567 as a simple table

na(n)
11
22
33
44
55
66
77
87
97
105
117
126
137
147
155
167
177
186
197
205
217
227
237
246
255
267
277
287
297
305
317
327
337
347
355
366
377
387
397
405
417
426
437
447
455
467
477
486
497
505
517
527
537
546
555
567
577
587
597
605
617
627
637
647
655
666
677
687
697
705

[1,2,3,4,5,6,7,7,7,5,7,6,7,7,5,7,7,6,7,5,7,7,7,6,
 5,7,7,7,7,5,7,7,7,7,5,6,7,7,7,5,7,6,7,7,5,7,7,6,7,
 5,7,7,7,6,5,7,7,7,7,5,7,7,7,7,5,6,7,7,7,5]