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A058308 as a simple table

na(n)
00
11
24
321
4130
5931
67578
769133
8698908
97757121
1093784360
111226953801
1217271137574
13260294017411
144181975416150
1571353876091961
161288551745071448
1724553837032449473
18492365292394060908
1910364224977307728541
20228505314793164088810

[0,1,4,21,130,931,7578,69133,698908,7757121,
 93784360,1226953801,17271137574,260294017411,
 4181975416150,71353876091961,1288551745071448,
 24553837032449473,492365292394060908,
 10364224977307728541,228505314793164088810]