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A371326 as a simple table

na(n)
00
11
25
371
41606
550334
62017840
798597204
85684225640
9377709287232
1028423701233784
112389343434217376
12221907620769333648
1322565504728129558272
142493614778861026071584
15297548320679718887153088
1638128996565367754662297600
175222327925855459163424791680

[0,1,5,71,1606,50334,2017840,98597204,5684225640,
 377709287232,28423701233784,2389343434217376,
 221907620769333648,22565504728129558272,
 2493614778861026071584,297548320679718887153088,
 38128996565367754662297600,
 5222327925855459163424791680]