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A180595 as a simple table

na(n)
00
15
21
36
42
57
63
78
84
99
105
111
126
132
147
153
168
174
189
195
201
216
222
237
243
258
264
279
285
291
306
312
327
333
348
354
369
375
381
396
402
417
423
438
444
459
465
471
486
492
507
513
528
534
549
555
561
576
582
597
603
618
624
639
645
651
666
672
687
693
708
714
729
735
741
756
762
777
783
798
804
819
825
831
846
852
867
873
888
894
909
915
921
936
942
957
963
978
984
999
1005
1011
1026
1032
1047

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