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A160528 as a simple table

na(n)
01
15
220
365
4190
5506
61265
72986
86745
914645
1030767
1162745
12124706
13242110
14460337
15858673
161574140
172839862
185048435
198852562
2015327290
2126224173
2244372688
2374301095
24123200079
25202394897
26329596348
27532299955
28852914900
291356426196
302141819621

[1,5,20,65,190,506,1265,2986,6745,14645,30767,
 62745,124706,242110,460337,858673,1574140,2839862,
 5048435,8852562,15327290,26224173,44372688,
 74301095,123200079,202394897,329596348,532299955,
 852914900,1356426196,2141819621]