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A351991 as a simple table

na(n)
01
10
21
31
46
511
6110
7232
83136
910032
10141492
11561001
129708864
1343864471
14886873780
154775054571
16106484438048
17651701988633
1816430255716392
19111498817293652
203124376125290804
2123598473924038152
22721819990948712614
235975067276022072669
24199594173117826648968

[1,0,1,1,6,11,110,232,3136,10032,141492,561001,
 9708864,43864471,886873780,4775054571,
 106484438048,651701988633,16430255716392,
 111498817293652,3124376125290804,
 23598473924038152,721819990948712614,
 5975067276022072669,199594173117826648968]