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A225617 as a simple table

na(n)
10
20
31
47
539
6188
7884
84116
919108
1089926
11427386
122068934
1310163358
1450888024
15258983668
161342912608
177079970072
1838000183102
19207309599246
201150329076074
216484351459090
2237143321514076
23216001121263896
241275332898098744
257639400455469944
2646423461664822648

[0,0,1,7,39,188,884,4116,19108,89926,427386,
 2068934,10163358,50888024,258983668,1342912608,
 7079970072,38000183102,207309599246,1150329076074,
 6484351459090,37143321514076,216001121263896,
 1275332898098744,7639400455469944,
 46423461664822648]