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A064299 as a simple table

na(n)
01
11
24
325
4210
52184
626796
7376233
85920200
9102816714
101947916100
1139890416020
12876478739164
1320537052247300
14510548782729680
1513407568735200525
16370553407586717490
1710742998644116921160
18325786278993936753300
1910307990595756667951830

[1,1,4,25,210,2184,26796,376233,5920200,102816714,
 1947916100,39890416020,876478739164,
 20537052247300,510548782729680,13407568735200525,
 370553407586717490,10742998644116921160,
 325786278993936753300,10307990595756667951830]