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A178921 as a simple table

na(n)
10
20
30
40
50
61
70
80
90
103
110
121
130
145
152
160
170
181
190
203
214
229
230
241
250
2611
270
285
290
302
310
320
338
3415
352
361
370
3817
3910
403
410
424
430
449
452
4621
470
481
490
503
5114
5211
530
541
556
565
5716
5827
590
602
610
6229
634
640
658
668
670
6815
6920
706
710
721
730
7435
752
7617
774
7810
790
803
810
8239
830
844
8512
8641
8726
889
890
902
916
9221
9328
9445
9514
961
970
985
998
1003
1010
10214
1030
10411

[0,0,0,0,0,1,0,0,0,3,0,1,0,5,2,0,0,1,0,3,4,9,0,1,
 0,11,0,5,0,2,0,0,8,15,2,1,0,17,10,3,0,4,0,9,2,21,
 0,1,0,3,14,11,0,1,6,5,16,27,0,2,0,29,4,0,8,8,0,15,
 20,6,0,1,0,35,2,17,4,10,0,3,0,39,0,4,12,41,26,9,0,
 2,6,21,28,45,14,1,0,5,8,3,0,14,0,11]