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A337348 as a simple table

na(n)
10
22
310
450
5210
6882
73570
814450
957970
10232562
11930930
123726450
1314908530
1459645042
15238591090
16954408050
173817675890
1815270878322
1961083688050
20244335451250
21977342504050
223909372812402
2315637494045810
2462549987368050
25250199960657010
261000799887367282
274003199594208370

[0,2,10,50,210,882,3570,14450,57970,232562,930930,
 3726450,14908530,59645042,238591090,954408050,
 3817675890,15270878322,61083688050,244335451250,
 977342504050,3909372812402,15637494045810,
 62549987368050,250199960657010,1000799887367282,
 4003199594208370]