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A175854 as a simple table

na(n)
10
20
30
40
50
60
70
81
90
100
110
121
130
140
150
160
170
181
190
201
211
220
230
241
251
260
271
281
291
301
310
320
330
340
350
361
370
380
390
400
410
421
430
441
451
460
470
480
490
501
510
521
530
541
550
560
571
580
590
600
610
620
631
640
650
661
671
681
690
701
710
721
730
740
751
761
770
781
790
800
811
821
830
840
850
861
871
880
891
900
910
921
930
940
950
960
970
981
991
1000

[0,0,0,0,0,0,0,1,0,0,0,1,0,0,0,0,0,1,0,1,1,0,0,1,
 1,0,1,1,1,1,0,0,0,0,0,1,0,0,0,0,0,1,0,1,1,0,0,0,0,
 1,0,1,0,1,0,0,1,0,0,0,0,0,1,0,0,1,1,1,0,1,0,1,0,0,
 1,1,0,1,0,0,1,1,0,0,0,1,1,0,1,0,0,1,0,0,0,0,0,1,1,
 0]