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A274718 as a simple table

na(n)
1-1
20
30
4-1
50
60
70
81
91
100
110
120
130
142
152
162
170
182
190
202
211
220
230
242
251
263
272
280
290
301
310
321
333
340
351
361
370
382
393
400
410
421
430
443
450
462
470
480
493
501
513
520
530
540
553
560
571
580
590
601
610
624
630
641
653
663
670
682
694
703
710
721
730
744
750
760
773
783
790
800
811
820
830
843
851
861
872
880
890
900
913
923
931
944
953
960
970
983
990
1003
1010
1021
1030
1040
1053

[-1,0,0,-1,0,0,0,1,1,0,0,0,0,2,2,2,0,2,0,2,1,0,0,
 2,1,3,2,0,0,1,0,1,3,0,1,1,0,2,3,0,0,1,0,3,0,2,0,0,
 3,1,3,0,0,0,3,0,1,0,0,1,0,4,0,1,3,3,0,2,4,3,0,1,0,
 4,0,0,3,3,0,0,1,0,0,3,1,1,2,0,0,0,3,3,1,4,3,0,0,3,
 0,3,0,1,0,0,3]