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A139435 as a simple table

na(n)
10
20
32
40
51
64
74
81
96
102
114
128
134
148
1510
162
172
1812
198
204
2114
228
232
2416
254
268
2718
2816
298
3020
3116
324
3322
344
3520
3624
3716
3816
3926
408
414
4228
4314
4416
4530
4610
478
4832
4928
5010
5134
5216
5313
5436
5524
5632
5738
5816
5920
6040
6115
6232
6342
6412
6520
6644
6732
688
6946
7040
7128
7248
7320
7432
7550
7632
7744
7852
7926
8020

[0,0,2,0,1,4,4,1,6,2,4,8,4,8,10,2,2,12,8,4,14,8,2,
 16,4,8,18,16,8,20,16,4,22,4,20,24,16,16,26,8,4,28,
 14,16,30,10,8,32,28,10,34,16,13,36,24,32,38,16,20,
 40,15,32,42,12,20,44,32,8,46,40,28,48,20,32,50,32,
 44,52,26,20]