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A307985 as a simple table

na(n)
10
20
31
40
50
61
70
80
92
100
110
122
130
140
153
160
170
183
190
200
214
220
230
244
250
260
275
280
290
305
310
320
336
340
350
366
370
380
397
400
410
427
430
440
458
460
470
488
490
500
519
520
530
549
550
560
5710
580
590
6010
610
620
6311
640
650
6611
670
680
6912
700
710
7212
730
740
7513
760
770
7813
790
800
8114
820
830

[0,0,1,0,0,1,0,0,2,0,0,2,0,0,3,0,0,3,0,0,4,0,0,4,
 0,0,5,0,0,5,0,0,6,0,0,6,0,0,7,0,0,7,0,0,8,0,0,8,0,
 0,9,0,0,9,0,0,10,0,0,10,0,0,11,0,0,11,0,0,12,0,0,
 12,0,0,13,0,0,13,0,0,14,0,0]