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A261767 as a simple table

na(n)
01
11
21
31
43
53
61
77
818
98
101
1115
1299
1364
1430
151
1631
17510
18560
19300
20144
211
2263
232745
244800
253150
261728
27840

[1,1,1,1,3,3,1,7,18,8,1,15,99,64,30,1,31,510,560,
 300,144,1,63,2745,4800,3150,1728,840]