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A221755 as a simple table

na(n)
10
21
30
40
52
60
71
81
94
100
110
129
130
148
150
161
1717
1843
191
2016
210
220
2364
2444
25241
260
2732
280
291
30171
31736
32748
331397
341
3564
360
370
38536
391680
4016715
414848
427989
430
44128
450
461
471558
4814548
49117067
50311288
5147575
5245956
531
54256
550
560
574689
5847314
591557684
603143356
616168942

[0,1,0,0,2,0,1,1,4,0,0,9,0,8,0,1,17,43,1,16,0,0,
 64,44,241,0,32,0,1,171,736,748,1397,1,64,0,0,536,
 1680,16715,4848,7989,0,128,0,1,1558,14548,117067,
 311288,47575,45956,1,256,0,0,4689,47314,1557684,
 3143356,6168942]