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A028661 as a simple table

na(n)
01
10
20
30
42
50
60
70
80
90
100
110
120
130
140
150
162
170
180
190
200
210
220
230
240
254
260
270
280
290
300
310
320
334
340
350
362
370
380
390
400
410
420
430
440
450
460
470
480
494
500
510
520
530
540
550
560
570
580
590
600
610
620
630
642
650
660
670
680
690
700
710
720
734
740
750
760
770
780
790
800

[1,0,0,0,2,0,0,0,0,0,0,0,0,0,0,0,2,0,0,0,0,0,0,0,
 0,4,0,0,0,0,0,0,0,4,0,0,2,0,0,0,0,0,0,0,0,0,0,0,0,
 4,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,0,0,0,0,0,0,0,0,4,
 0,0,0,0,0,0,0]