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A160988 as a simple table

na(n)
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
181
191
201
211
221
231
241
251
261
271
281
291
301
311
321
331
341
351
362
371
382
391
402
411
422
431
442
451
462
471
482
491
502
511
522
531
544
552
564
574
585
594
607
615
627
637
648
657
6610
678
6810
6910
7011
7110
7215
7312
7414
7515
7617
7715
7819
7917
8020
8120
8221
8320
8425
8522
8624
8725
8827
8925
9032
9128
9232
9332
9434
9534
9639
9735
9839
9940
10043
10140
10246
10343
10447

[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,
 1,1,1,1,1,1,1,1,1,1,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,
 2,1,2,1,4,2,4,4,5,4,7,5,7,7,8,7,10,8,10,10,11,10,
 15,12,14,15,17,15,19,17,20,20,21,20,25,22,24,25,
 27,25,32,28,32,32,34,34,39,35,39,40,43,40,46,43,
 47]