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A042970 as a simple table

na(n)
10
20
30
42
50
62
70
86
90
102
110
120
130
142
150
166
170
182
190
2016
210
222
230
244
250
262
270
2820
290
300
310
326
330
342
350
3624
370
382
390
4020
410
426
430
4428
450
462
470
4812
490
502
510
5232
530
5420
550
560
570
582
590
604
610
622
630
646
650
6642
670
6840
690
7042
710
7252
730
742
750
7644
770
7820
790
8020
810
822
830
840
850
862
870
8848
890
900
910
9252
930
942
950

[0,0,0,2,0,2,0,6,0,2,0,0,0,2,0,6,0,2,0,16,0,2,0,4,
 0,2,0,20,0,0,0,6,0,2,0,24,0,2,0,20,0,6,0,28,0,2,0,
 12,0,2,0,32,0,20,0,0,0,2,0,4,0,2,0,6,0,42,0,40,0,
 42,0,52,0,2,0,44,0,20,0,20,0,2,0,0,0,2,0,48,0,0,0,
 52,0,2,0]