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A347947 as a simple table

na(n)
01
13
25
324
481
5298
61070
73868
813960
950417
10182084
11657707
122375894
138583264
1431009890
15112038032
16404803299
171462624643
185284813128
1919095564020
2068998567080
21249316670981
22900876831495
233255230444720
2411762504284218
2542502963168784
26153581776819904

[1,3,5,24,81,298,1070,3868,13960,50417,182084,
 657707,2375894,8583264,31009890,112038032,
 404803299,1462624643,5284813128,19095564020,
 68998567080,249316670981,900876831495,
 3255230444720,11762504284218,42502963168784,
 153581776819904]