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A257402 as a simple table

na(n)
01
11
20
30
40
51
60
70
81
90
100
110
121
131
140
150
161
171
180
190
201
211
220
230
240
250
260
270
281
290
300
310
320
332
340
350
361
371
380
390
401
411
420
430
441
451
460
470
480
490
500
510
522
530
540
550
561
571
580
590
600
610
620
630
640
651
660
670
681
691
700
710
721
731
740
750
761
772
780
790
801
810
820
830
840
851
860

[1,1,0,0,0,1,0,0,1,0,0,0,1,1,0,0,1,1,0,0,1,1,0,0,
 0,0,0,0,1,0,0,0,0,2,0,0,1,1,0,0,1,1,0,0,1,1,0,0,0,
 0,0,0,2,0,0,0,1,1,0,0,0,0,0,0,0,1,0,0,1,1,0,0,1,1,
 0,0,1,2,0,0,1,0,0,0,0,1,0]