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A192212 as a simple table

na(n)
10
20
33
48
535
684
7364
8832
92997
108700
1128281
1255080
13265720
14794304
152006730
165240928
1721511647
1847028492
19193587884
20415388400
211607804226

[0,0,3,8,35,84,364,832,2997,8700,28281,55080,
 265720,794304,2006730,5240928,21511647,47028492,
 193587884,415388400,1607804226]