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A073759 as a simple table

na(n)
10
20
30
40
50
64
70
86
96
108
110
1210
130
1412
1512
1614
170
1816
190
2018
2118
2220
230
2422
2520
2624
2724
2826
290
3028
310
3230
3330
3432
3530
3634
370
3836
3936
4038
410
4240
430
4442
4542
4644
470
4846
4942
5048
5148
5250
530
5452
5550
5654
5754
5856
590
6058
610
6260
6360
6462
6560
6664
670
6866
6966
7068
710
7270
730
7472
7572
7674
7770
7876

[0,0,0,0,0,4,0,6,6,8,0,10,0,12,12,14,0,16,0,18,18,
 20,0,22,20,24,24,26,0,28,0,30,30,32,30,34,0,36,36,
 38,0,40,0,42,42,44,0,46,42,48,48,50,0,52,50,54,54,
 56,0,58,0,60,60,62,60,64,0,66,66,68,0,70,0,72,72,
 74,70,76]