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A188496 as a simple table

na(n)
00
10
22
34
410
528
696
7304
8928
92784
108504
1126124
1280228
13245544
14751168
152299184
167040986
1721561028
1866015398
19202114264
20618817376
211894692160
225801169248
2317761879056
2454382725520
25166507388264
26509808051944
271560917463152
284779176035680

[0,0,2,4,10,28,96,304,928,2784,8504,26124,80228,
 245544,751168,2299184,7040986,21561028,66015398,
 202114264,618817376,1894692160,5801169248,
 17761879056,54382725520,166507388264,509808051944,
 1560917463152,4779176035680]