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A246530 as a simple table

na(n)
01
11
24
325
4218
52475
634696
7579223
811220540
9247395097
106117023600
11167639670441
125044046990776
13165322086357715
145863394794421088
15223751099288794375
169141963589243198736
17398198217292835137137
1818420080017512816009280
19901874615547758970425977

[1,1,4,25,218,2475,34696,579223,11220540,
 247395097,6117023600,167639670441,5044046990776,
 165322086357715,5863394794421088,
 223751099288794375,9141963589243198736,
 398198217292835137137,18420080017512816009280,
 901874615547758970425977]