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A001945 as a simple table

na(n)
00
11
21
31
45
51
67
78
85
919
1011
1123
1235
1327
1464
1561
1685
17137
18133
19229
20275
21344
22529
23599
24875
251151
261431
272071
282560
293481
304697
315953
328245
3310649
3414111
3519048
3624605
3733227
3843739
3957591
4077275
41101107
42134848
43178709
44235405
45314089
46413909

[0,1,1,1,5,1,7,8,5,19,11,23,35,27,64,61,85,137,
 133,229,275,344,529,599,875,1151,1431,2071,2560,
 3481,4697,5953,8245,10649,14111,19048,24605,33227,
 43739,57591,77275,101107,134848,178709,235405,
 314089,413909]