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A175794 as a simple table

na(n)
1-1
2-2
3-3
4-2
5-3
6-4
7-3
8-2
9-1
10-2
11-1
12-2
13-3
14-4
15-3
16-2
17-1
180
191
202
213
222
231
242
253
262
273
284
295
306
317
328
339
3410
359
368
379
3810
3911
4010
419
428
437
446
455
464
473
482
491
502
511
520
53-1
540
551
562
571
580
591
600
611
620
631
642
653
664
675
686
695
704
715
726
735
744
753
764
775
786
797
806
817
826
835
846
855
866
875
886
897
906
917
926
935
944
955

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