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A250634 as a simple table

na(n)
1125
2654
32969
412360
549310
6190213
7720347
82690076
99964237
1036686400
11134581437
12492406440
131798700175
146562904559
1523928907661
1687203461550
17317693877115
181157153380541
194214191335186
2015346090893547
2155879956700824

[125,654,2969,12360,49310,190213,720347,2690076,
 9964237,36686400,134581437,492406440,1798700175,
 6562904559,23928907661,87203461550,317693877115,
 1157153380541,4214191335186,15346090893547,
 55879956700824]