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A098620 as a simple table

na(n)
01
11
24
326
4257
53586
666207
71540693
843659615
91469677309
1057681784820
112601121752854
12133170904684965
137664254746784243
14491679121677763607
1534905596059311761907
162725010800987216480527
17232643959843709167832482
1821613761720729431904201734

[1,1,4,26,257,3586,66207,1540693,43659615,
 1469677309,57681784820,2601121752854,
 133170904684965,7664254746784243,
 491679121677763607,34905596059311761907,
 2725010800987216480527,232643959843709167832482,
 21613761720729431904201734]