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A028975 as a simple table

na(n)
01
10
20
36
44
52
64
70
84
94
102
118
1210
132
140
1512
168
170
184
1910
206
212
220
234
2420
254
266
2720
280
294
308
318
328
338
344
352
3624
374
382
3916
406
414
422
4312
4416
4510
464
478
4822
490
504
5140
526
530
5410
558
560
574
584
5922
6036
612
624
630
6420
654
668
6716
688
6916
702
7112
7224
734
744
7538
7622
770
7812
798
8018
8120
824
8318
846
854
864

[1,0,0,6,4,2,4,0,4,4,2,8,10,2,0,12,8,0,4,10,6,2,0,
 4,20,4,6,20,0,4,8,8,8,8,4,2,24,4,2,16,6,4,2,12,16,
 10,4,8,22,0,4,40,6,0,10,8,0,4,4,22,36,2,4,0,20,4,
 8,16,8,16,2,12,24,4,4,38,22,0,12,8,18,20,4,18,6,4,
 4]