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A081409 as a simple table

na(n)
01
11
21
32704156
496614908840363322603893139521372656
526390396795222677975727207509769281627761276862587589456302534175336254818515595864127888

[1,1,1,2704156,
 96614908840363322603893139521372656,
 26390396795222677975727207509769281627761276862587\
 589456302534175336254818515595864127888]