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A188224 as a simple table

na(n)
01
12
26
310
424
554
696
7200
8442
9650
101548
112370
124060
137670
1415792
1525740
1649074
1781900
18147756
19251012

[1,2,6,10,24,54,96,200,442,650,1548,2370,4060,
 7670,15792,25740,49074,81900,147756,251012]