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A163271 as a simple table

na(n)
10
22
34
410
524
658
7140
8338
9816
101970
114756
1211482
1327720
1466922
15161564
16390050
17941664
182273378
195488420
2013250218
2131988856
2277227930
23186444716
24450117362
251086679440
262623476242
276333631924
2815290740090
2936915112104
3089120964298
31215157040700

[0,2,4,10,24,58,140,338,816,1970,4756,11482,27720,
 66922,161564,390050,941664,2273378,5488420,
 13250218,31988856,77227930,186444716,450117362,
 1086679440,2623476242,6333631924,15290740090,
 36915112104,89120964298,215157040700]