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A188492 as a simple table

na(n)
00
10
22
36
414
538
6124
7400
81232
93712
1011288
1134628
12106352
13325772
14996712
153050352
169340170
1728602014
1887576426
19268129662
20820931640
212513509536
227695861408
2323563048304
2472144604576
25220890113784
26676315440208
272070725515096

[0,0,2,6,14,38,124,400,1232,3712,11288,34628,
 106352,325772,996712,3050352,9340170,28602014,
 87576426,268129662,820931640,2513509536,
 7695861408,23563048304,72144604576,220890113784,
 676315440208,2070725515096]