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A218787 as a simple table

na(n)
10
20
30
40
51
60
70
81
92
100
110
120
131
142
150
168
170
180
191
200
210
221
232
240
258
260
270
281
298
300
310
323
330
342
351
360
370
380
391
402
410
428
430
440
451
468
470
480
493
500
512
521
530
548
550
560
573
580
5960
600
610
62172
630
642
650
661
670
680
691
702
710
728
730
740
751
768
770
780
793
800
812
821
830
848
850
860

[0,0,0,0,1,0,0,1,2,0,0,0,1,2,0,8,0,0,1,0,0,1,2,0,
 8,0,0,1,8,0,0,3,0,2,1,0,0,0,1,2,0,8,0,0,1,8,0,0,3,
 0,2,1,0,8,0,0,3,0,60,0,0,172,0,2,0,1,0,0,1,2,0,8,
 0,0,1,8,0,0,3,0,2,1,0,8,0,0]