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A016949 as a simple table

na(n)
0243
159049
2759375
34084101
414348907
539135393
690224199
7184528125
8345025251
9601692057
10992436543
111564031349
122373046875
133486784401
144984209207
156956883693
169509900499
1712762815625
1816850581551
1921924480357
2028153056843
2135723051649
2244840334375
2355730836701

[243,59049,759375,4084101,14348907,39135393,
 90224199,184528125,345025251,601692057,992436543,
 1564031349,2373046875,3486784401,4984209207,
 6956883693,9509900499,12762815625,16850581551,
 21924480357,28153056843,35723051649,44840334375,
 55730836701]