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A038205 as a simple table

na(n)
01
10
20
32
46
524
6160
71140
88988
980864
10809856
118907480
12106877320
131389428832
1419452141696
15291781655984
164668504894480
1779364592318720
181428562679845888
1927142690734936864
20542853814536802656
2111399930109077490560
22250798462399300784640

[1,0,0,2,6,24,160,1140,8988,80864,809856,8907480,
 106877320,1389428832,19452141696,291781655984,
 4668504894480,79364592318720,1428562679845888,
 27142690734936864,542853814536802656,
 11399930109077490560,250798462399300784640]