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A372264 as a simple table

na(n)
11
21
32
415
5104
6695
75004
840271
9362816
103628719
1139916700
12479001479
136227020656
1487178291031
151307674367804
1620922789887775
17355687428095744
186402373705727711
19121645100408831676
202432902008176639639
2151090942171709439600
221124000727777607679559
2325852016738884976639516

[1,1,2,15,104,695,5004,40271,362816,3628719,
 39916700,479001479,6227020656,87178291031,
 1307674367804,20922789887775,355687428095744,
 6402373705727711,121645100408831676,
 2432902008176639639,51090942171709439600,
 1124000727777607679559,25852016738884976639516]