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A180598 as a simple table

na(n)
00
18
27
36
45
54
63
72
81
99
108
117
126
135
144
153
162
171
189
198
207
216
225
234
243
252
261
279
288
297
306
315
324
333
342
351
369
378
387
396
405
414
423
432
441
459
468
477
486
495
504
513
522
531
549
558
567
576
585
594
603
612
621
639
648
657
666
675
684
693
702
711
729
738
747
756
765
774
783
792
801
819
828
837
846
855
864
873
882
891
909
918
927
936
945
954
963
972
981
999
1008
1017
1026
1035
1044

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